diff --git a/lib/presentation/setting/widgets/bar_printer_page.dart b/lib/presentation/setting/widgets/bar_printer_page.dart
index d206128..9f367c4 100644
--- a/lib/presentation/setting/widgets/bar_printer_page.dart
+++ b/lib/presentation/setting/widgets/bar_printer_page.dart
@@ -22,23 +22,22 @@ class BarPrinterPage extends StatefulWidget {
 
 class _BarPrinterPageState extends State<BarPrinterPage> {
   String selectedPrinter = 'Bluetooth';
-  TextEditingController? addressController;
-  TextEditingController? printNameController;
+  TextEditingController addressController = TextEditingController();
+  TextEditingController printNameController = TextEditingController();
   String paper = '58';
   bool isInitialized = false;
   @override
   void initState() {
-    // TODO: implement initState
     super.initState();
-    addressController = TextEditingController();
-    printNameController = TextEditingController();
-    context.read<GetPrinterBarBloc>().add(GetPrinterBarEvent.get());
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      context.read<GetPrinterBarBloc>().add(GetPrinterBarEvent.get());
+    });
   }
 
   @override
   void dispose() {
-    addressController!.dispose();
-    printNameController!.dispose();
+    addressController.dispose();
+    printNameController.dispose();
     super.dispose();
   }
 
@@ -57,8 +56,8 @@ class _BarPrinterPageState extends State<BarPrinterPage> {
               },
               success: (data) {
                 if (data != null && !isInitialized) {
-                  addressController!.text = data.address;
-                  printNameController!.text = data.name;
+                  addressController.text = data.address;
+                  printNameController.text = data.name;
                   selectedPrinter = data.type;
                   paper = data.paper;
                   isInitialized = true;
@@ -112,7 +111,7 @@ class _BarPrinterPageState extends State<BarPrinterPage> {
                                   context: context,
                                   builder: (context) => DialogSearchPrinter(
                                     onSelected: (value) {
-                                      addressController!.text = value;
+                                      addressController.text = value;
                                       setState(() {});
                                     },
                                   ),
@@ -120,14 +119,14 @@ class _BarPrinterPageState extends State<BarPrinterPage> {
                               },
                               label: 'Search')
                           : CustomTextField(
-                              controller: addressController!,
+                              controller: addressController,
                               label: 'Address',
                               showLabel: false,
                             ),
                       SpaceHeight(16),
                       // Textfield for name
                       CustomTextField(
-                        controller: printNameController!,
+                        controller: printNameController,
                         label: 'Print Name',
                         showLabel: false,
                       ),
@@ -161,14 +160,14 @@ class _BarPrinterPageState extends State<BarPrinterPage> {
                       // button test print
                       Button.outlined(
                           onPressed: () async {
-                            if (addressController!.text.isNotEmpty &&
-                                printNameController!.text.isNotEmpty) {
+                            if (addressController.text.isNotEmpty &&
+                                printNameController.text.isNotEmpty) {
                               try {
                                 // Create a test print model
                                 final testPrinter = PrintModel(
                                   code: 'bar',
-                                  name: printNameController!.text,
-                                  address: addressController!.text,
+                                  name: printNameController.text,
+                                  address: addressController.text,
                                   paper: paper,
                                   type: selectedPrinter,
                                 );
@@ -234,8 +233,8 @@ class _BarPrinterPageState extends State<BarPrinterPage> {
                                       onPressed: () {
                                         final printData = PrintModel(
                                           code: 'bar',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
@@ -279,8 +278,8 @@ class _BarPrinterPageState extends State<BarPrinterPage> {
                                         final printData = PrintModel(
                                           id: data.id,
                                           code: 'bar',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
diff --git a/lib/presentation/setting/widgets/checker_printer_page.dart b/lib/presentation/setting/widgets/checker_printer_page.dart
index 1405eb4..322987a 100644
--- a/lib/presentation/setting/widgets/checker_printer_page.dart
+++ b/lib/presentation/setting/widgets/checker_printer_page.dart
@@ -22,23 +22,22 @@ class CheckerPrinterPage extends StatefulWidget {
 
 class _CheckerPrinterPageState extends State<CheckerPrinterPage> {
   String selectedPrinter = 'Bluetooth';
-  TextEditingController? addressController;
-  TextEditingController? printNameController;
+  TextEditingController addressController = TextEditingController();
+  TextEditingController printNameController = TextEditingController();
   String paper = '58';
   bool isInitialized = false;
   @override
   void initState() {
-    // TODO: implement initState
     super.initState();
-    addressController = TextEditingController();
-    printNameController = TextEditingController();
-    context.read<GetPrinterCheckerBloc>().add(GetPrinterCheckerEvent.get());
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      context.read<GetPrinterCheckerBloc>().add(GetPrinterCheckerEvent.get());
+    });
   }
 
   @override
   void dispose() {
-    addressController!.dispose();
-    printNameController!.dispose();
+    addressController.dispose();
+    printNameController.dispose();
     isInitialized = false;
     super.dispose();
   }
@@ -59,8 +58,8 @@ class _CheckerPrinterPageState extends State<CheckerPrinterPage> {
               success: (data) {
                 log("Checker Printer: ${data?.toMap()}");
                 if (data != null && !isInitialized) {
-                  addressController!.text = data.address;
-                  printNameController!.text = data.name;
+                  addressController.text = data.address;
+                  printNameController.text = data.name;
                   selectedPrinter = data.type;
                   paper = data.paper;
                   isInitialized = true;
@@ -114,7 +113,7 @@ class _CheckerPrinterPageState extends State<CheckerPrinterPage> {
                                   context: context,
                                   builder: (context) => DialogSearchPrinter(
                                     onSelected: (value) {
-                                      addressController!.text = value;
+                                      addressController.text = value;
                                       setState(() {});
                                     },
                                   ),
@@ -122,14 +121,14 @@ class _CheckerPrinterPageState extends State<CheckerPrinterPage> {
                               },
                               label: 'Search')
                           : CustomTextField(
-                              controller: addressController!,
+                              controller: addressController,
                               label: 'Address',
                               showLabel: false,
                             ),
                       SpaceHeight(16),
                       // Textfield for name
                       CustomTextField(
-                        controller: printNameController!,
+                        controller: printNameController,
                         label: 'Print Name',
                         showLabel: false,
                       ),
@@ -163,14 +162,14 @@ class _CheckerPrinterPageState extends State<CheckerPrinterPage> {
                       // button test print
                       Button.outlined(
                           onPressed: () async {
-                            if (addressController!.text.isNotEmpty &&
-                                printNameController!.text.isNotEmpty) {
+                            if (addressController.text.isNotEmpty &&
+                                printNameController.text.isNotEmpty) {
                               try {
                                 // Create a test print model
                                 final testPrinter = PrintModel(
                                   code: 'checker',
-                                  name: printNameController!.text,
-                                  address: addressController!.text,
+                                  name: printNameController.text,
+                                  address: addressController.text,
                                   paper: paper,
                                   type: selectedPrinter,
                                 );
@@ -237,8 +236,8 @@ class _CheckerPrinterPageState extends State<CheckerPrinterPage> {
                                       onPressed: () {
                                         final printData = PrintModel(
                                           code: 'checker',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
@@ -282,8 +281,8 @@ class _CheckerPrinterPageState extends State<CheckerPrinterPage> {
                                         final printData = PrintModel(
                                           id: data.id,
                                           code: 'checker',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
diff --git a/lib/presentation/setting/widgets/kitchen_printer_page.dart b/lib/presentation/setting/widgets/kitchen_printer_page.dart
index 7ed4ad2..592b5ce 100644
--- a/lib/presentation/setting/widgets/kitchen_printer_page.dart
+++ b/lib/presentation/setting/widgets/kitchen_printer_page.dart
@@ -22,23 +22,22 @@ class KitchenPrinterPage extends StatefulWidget {
 
 class _KitchenPrinterPageState extends State<KitchenPrinterPage> {
   String selectedPrinter = 'Bluetooth';
-  TextEditingController? addressController;
-  TextEditingController? printNameController;
+  TextEditingController addressController = TextEditingController();
+  TextEditingController printNameController = TextEditingController();
   String paper = '58';
   bool isInitialized = false;
   @override
   void initState() {
-    // TODO: implement initState
     super.initState();
-    addressController = TextEditingController();
-    printNameController = TextEditingController();
-    context.read<GetPrinterKitchenBloc>().add(GetPrinterKitchenEvent.get());
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      context.read<GetPrinterKitchenBloc>().add(GetPrinterKitchenEvent.get());
+    });
   }
 
   @override
   void dispose() {
-    addressController!.dispose();
-    printNameController!.dispose();
+    addressController.dispose();
+    printNameController.dispose();
     super.dispose();
   }
 
@@ -57,8 +56,8 @@ class _KitchenPrinterPageState extends State<KitchenPrinterPage> {
               },
               success: (data) {
                 if (data != null && !isInitialized) {
-                  addressController!.text = data.address;
-                  printNameController!.text = data.name;
+                  addressController.text = data.address;
+                  printNameController.text = data.name;
                   selectedPrinter = data.type;
                   paper = data.paper;
                   isInitialized = true;
@@ -112,7 +111,7 @@ class _KitchenPrinterPageState extends State<KitchenPrinterPage> {
                                   context: context,
                                   builder: (context) => DialogSearchPrinter(
                                     onSelected: (value) {
-                                      addressController!.text = value;
+                                      addressController.text = value;
                                       setState(() {});
                                     },
                                   ),
@@ -120,14 +119,14 @@ class _KitchenPrinterPageState extends State<KitchenPrinterPage> {
                               },
                               label: 'Search')
                           : CustomTextField(
-                              controller: addressController!,
+                              controller: addressController,
                               label: 'Address',
                               showLabel: false,
                             ),
                       SpaceHeight(16),
                       // Textfield for name
                       CustomTextField(
-                        controller: printNameController!,
+                        controller: printNameController,
                         label: 'Print Name',
                         showLabel: false,
                       ),
@@ -161,14 +160,14 @@ class _KitchenPrinterPageState extends State<KitchenPrinterPage> {
                       // button test print
                       Button.outlined(
                           onPressed: () async {
-                            if (addressController!.text.isNotEmpty &&
-                                printNameController!.text.isNotEmpty) {
+                            if (addressController.text.isNotEmpty &&
+                                printNameController.text.isNotEmpty) {
                               try {
                                 // Create a test print model
                                 final testPrinter = PrintModel(
                                   code: 'kitchen',
-                                  name: printNameController!.text,
-                                  address: addressController!.text,
+                                  name: printNameController.text,
+                                  address: addressController.text,
                                   paper: paper,
                                   type: selectedPrinter,
                                 );
@@ -235,8 +234,8 @@ class _KitchenPrinterPageState extends State<KitchenPrinterPage> {
                                       onPressed: () {
                                         final printData = PrintModel(
                                           code: 'kitchen',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
@@ -280,8 +279,8 @@ class _KitchenPrinterPageState extends State<KitchenPrinterPage> {
                                         final printData = PrintModel(
                                           id: data.id,
                                           code: 'kitchen',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
diff --git a/lib/presentation/setting/widgets/receipt_printer_page.dart b/lib/presentation/setting/widgets/receipt_printer_page.dart
index 0e1d016..31e9a30 100644
--- a/lib/presentation/setting/widgets/receipt_printer_page.dart
+++ b/lib/presentation/setting/widgets/receipt_printer_page.dart
@@ -23,23 +23,22 @@ class ReceiptPrinterPage extends StatefulWidget {
 
 class _ReceiptPrinterPageState extends State<ReceiptPrinterPage> {
   String selectedPrinter = 'Bluetooth';
-  TextEditingController? addressController;
-  TextEditingController? printNameController;
+  TextEditingController addressController = TextEditingController();
+  TextEditingController printNameController = TextEditingController();
   String paper = '58';
   bool isInitialized = false;
   @override
   void initState() {
-    // TODO: implement initState
     super.initState();
-    addressController = TextEditingController();
-    printNameController = TextEditingController();
-    context.read<GetPrinterReceiptBloc>().add(GetPrinterReceiptEvent.get());
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      context.read<GetPrinterReceiptBloc>().add(GetPrinterReceiptEvent.get());
+    });
   }
 
   @override
   void dispose() {
-    addressController!.dispose();
-    printNameController!.dispose();
+    addressController.dispose();
+    printNameController.dispose();
     super.dispose();
   }
 
@@ -58,8 +57,8 @@ class _ReceiptPrinterPageState extends State<ReceiptPrinterPage> {
               },
               success: (data) {
                 if (data != null && !isInitialized) {
-                  addressController!.text = data.address;
-                  printNameController!.text = data.name;
+                  addressController.text = data.address;
+                  printNameController.text = data.name;
                   selectedPrinter = data.type;
                   paper = data.paper;
                   isInitialized = true;
@@ -113,7 +112,7 @@ class _ReceiptPrinterPageState extends State<ReceiptPrinterPage> {
                                   context: context,
                                   builder: (context) => DialogSearchPrinter(
                                     onSelected: (value) {
-                                      addressController!.text = value;
+                                      addressController.text = value;
                                       setState(() {});
                                     },
                                   ),
@@ -121,14 +120,14 @@ class _ReceiptPrinterPageState extends State<ReceiptPrinterPage> {
                               },
                               label: 'Search')
                           : CustomTextField(
-                              controller: addressController!,
+                              controller: addressController,
                               label: 'Address',
                               showLabel: false,
                             ),
                       SpaceHeight(16),
                       // Textfield for name
                       CustomTextField(
-                        controller: printNameController!,
+                        controller: printNameController,
                         label: 'Print Name',
                         showLabel: false,
                       ),
@@ -162,8 +161,8 @@ class _ReceiptPrinterPageState extends State<ReceiptPrinterPage> {
                       // button test print
                       Button.outlined(
                           onPressed: () async {
-                            if (addressController!.text.isNotEmpty &&
-                                printNameController!.text.isNotEmpty) {
+                            if (addressController.text.isNotEmpty &&
+                                printNameController.text.isNotEmpty) {
                               try {
                                 // Get actual tax and service charge settings
                                 final settingsLocalDatasource =
@@ -177,8 +176,8 @@ class _ReceiptPrinterPageState extends State<ReceiptPrinterPage> {
                                 // Create a test print model
                                 final testPrinter = PrintModel(
                                   code: 'receipt',
-                                  name: printNameController!.text,
-                                  address: addressController!.text,
+                                  name: printNameController.text,
+                                  address: addressController.text,
                                   paper: paper,
                                   type: selectedPrinter,
                                 );
@@ -253,8 +252,8 @@ class _ReceiptPrinterPageState extends State<ReceiptPrinterPage> {
                                       onPressed: () {
                                         final printData = PrintModel(
                                           code: 'receipt',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
@@ -298,8 +297,8 @@ class _ReceiptPrinterPageState extends State<ReceiptPrinterPage> {
                                         final printData = PrintModel(
                                           id: data.id,
                                           code: 'receipt',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
diff --git a/lib/presentation/setting/widgets/ticket_printer_page.dart b/lib/presentation/setting/widgets/ticket_printer_page.dart
index bf80b29..e655553 100644
--- a/lib/presentation/setting/widgets/ticket_printer_page.dart
+++ b/lib/presentation/setting/widgets/ticket_printer_page.dart
@@ -23,22 +23,22 @@ class TicketPrinterPage extends StatefulWidget {
 
 class _TicketPrinterPageState extends State<TicketPrinterPage> {
   String selectedPrinter = 'Bluetooth';
-  TextEditingController? addressController;
-  TextEditingController? printNameController;
+  TextEditingController addressController = TextEditingController();
+  TextEditingController printNameController = TextEditingController();
   String paper = '58';
   bool isInitialized = false;
   @override
   void initState() {
     super.initState();
-    addressController = TextEditingController();
-    printNameController = TextEditingController();
-    context.read<GetPrinterTicketBloc>().add(GetPrinterTicketEvent.get());
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      context.read<GetPrinterTicketBloc>().add(GetPrinterTicketEvent.get());
+    });
   }
 
   @override
   void dispose() {
-    addressController!.dispose();
-    printNameController!.dispose();
+    addressController.dispose();
+    printNameController.dispose();
     super.dispose();
   }
 
@@ -57,8 +57,8 @@ class _TicketPrinterPageState extends State<TicketPrinterPage> {
               },
               success: (data) {
                 if (data != null && !isInitialized) {
-                  addressController!.text = data.address;
-                  printNameController!.text = data.name;
+                  addressController.text = data.address;
+                  printNameController.text = data.name;
                   selectedPrinter = data.type;
                   paper = data.paper;
                   isInitialized = true;
@@ -112,7 +112,7 @@ class _TicketPrinterPageState extends State<TicketPrinterPage> {
                                   context: context,
                                   builder: (context) => DialogSearchPrinter(
                                     onSelected: (value) {
-                                      addressController!.text = value;
+                                      addressController.text = value;
                                       setState(() {});
                                     },
                                   ),
@@ -120,14 +120,14 @@ class _TicketPrinterPageState extends State<TicketPrinterPage> {
                               },
                               label: 'Search')
                           : CustomTextField(
-                              controller: addressController!,
+                              controller: addressController,
                               label: 'Address',
                               showLabel: false,
                             ),
                       SpaceHeight(16),
                       // Textfield for name
                       CustomTextField(
-                        controller: printNameController!,
+                        controller: printNameController,
                         label: 'Print Name',
                         showLabel: false,
                       ),
@@ -161,14 +161,14 @@ class _TicketPrinterPageState extends State<TicketPrinterPage> {
                       // button test print
                       Button.outlined(
                           onPressed: () async {
-                            if (addressController!.text.isNotEmpty &&
-                                printNameController!.text.isNotEmpty) {
+                            if (addressController.text.isNotEmpty &&
+                                printNameController.text.isNotEmpty) {
                               try {
                                 // Create a test print model
                                 final testPrinter = PrintModel(
                                   code: 'ticket',
-                                  name: printNameController!.text,
-                                  address: addressController!.text,
+                                  name: printNameController.text,
+                                  address: addressController.text,
                                   paper: paper,
                                   type: selectedPrinter,
                                 );
@@ -231,8 +231,8 @@ class _TicketPrinterPageState extends State<TicketPrinterPage> {
                                       onPressed: () {
                                         final printData = PrintModel(
                                           code: 'ticket',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );
@@ -276,8 +276,8 @@ class _TicketPrinterPageState extends State<TicketPrinterPage> {
                                         final printData = PrintModel(
                                           id: data.id,
                                           code: 'ticket',
-                                          name: printNameController!.text,
-                                          address: addressController!.text,
+                                          name: printNameController.text,
+                                          address: addressController.text,
                                           paper: paper,
                                           type: selectedPrinter,
                                         );