diff --git a/lib/next/terminal_view.dart b/lib/next/terminal_view.dart
index d38f8d71..a959f115 100644
--- a/lib/next/terminal_view.dart
+++ b/lib/next/terminal_view.dart
@@ -86,6 +86,8 @@ class TerminalViewState extends State<TerminalView> {
   final scrollableKey = GlobalKey<ScrollableState>();
 
   String? composingText;
+  
+  T? _nonNullableWrap<T>(T? value) => value;
 
   @override
   void initState() {
@@ -142,7 +144,7 @@ class TerminalViewState extends State<TerminalView> {
 
   void _onKeyboardShow() {
     if (focusNode.hasFocus) {
-      WidgetsBinding.instance?.addPostFrameCallback((_) {
+       _nonNullableWrap(WidgetsBinding.instance)!.addPostFrameCallback((_) {
         _scrollToBottom();
       });
     }
@@ -503,8 +505,10 @@ class _RenderTerminalViewport extends RenderBox {
         );
       }
     }
+    
+    T? _nonNullableWrap<T>(T? value) => value;
 
-    SchedulerBinding.instance!
+   _nonNullableWrap(WidgetsBinding.instance)!
         .addPostFrameCallback((_) => _notifyEditableRect());
   }
 
@@ -654,6 +658,8 @@ class _RenderTerminalViewport extends RenderBox {
         );
     }
   }
+  
+  
 
   void _paintComposingText(Canvas canvas, Offset offset) {
     final composingText = _composingText;
diff --git a/lib/next/ui/custom_text_edit.dart b/lib/next/ui/custom_text_edit.dart
index d9f0943b..2db40864 100644
--- a/lib/next/ui/custom_text_edit.dart
+++ b/lib/next/ui/custom_text_edit.dart
@@ -257,4 +257,13 @@ class CustomTextEditState extends State<CustomTextEdit>
   void performPrivateCommand(String action, Map<String, dynamic> data) {
     // print('performPrivateCommand $action');
   }
+  
+  @override
+  void showToolbar() {}
+
+  @override
+  void insertTextPlaceholder(Size size) {}
+
+  @override
+  void removeTextPlaceholder() {}
 }
diff --git a/lib/next/ui/keyboard_visibility.dart b/lib/next/ui/keyboard_visibility.dart
index 2bef57f9..abf927bb 100644
--- a/lib/next/ui/keyboard_visibility.dart
+++ b/lib/next/ui/keyboard_visibility.dart
@@ -22,15 +22,18 @@ class KeyboardVisibilty extends StatefulWidget {
 
 class _KeyboardVisibiltyState extends State<KeyboardVisibilty>
     with WidgetsBindingObserver {
+  
+  T? _nonNullableWrap<T>(T? value) => value;
+  
   @override
   void initState() {
     super.initState();
-    WidgetsBinding.instance!.addObserver(this);
+    _nonNullableWrap(WidgetsBinding.instance)!.addObserver(this);
   }
 
   @override
   void dispose() {
-    WidgetsBinding.instance!.removeObserver(this);
+    _nonNullableWrap(WidgetsBinding.instance)!.removeObserver(this);
     super.dispose();
   }