When pasting a nav bar onto two empty pages and switching tabs, the following error occurs. After moving to the second tab, touch the main screen, then go back to the first tab and touch the main screen again. Who can help me with this
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: A FocusNode was used after being disposed.
E/flutter (22177): Once you have called dispose() on a FocusNode, it can no longer be used.
E/flutter (22177): #0 ChangeNotifier.debugAssertNotDisposed.<anonymous closure> (package:flutter/src/foundation/change_notifier.dart:179:9)
E/flutter (22177): #1 ChangeNotifier.debugAssertNotDisposed (package:flutter/src/foundation/change_notifier.dart:186:6)
E/flutter (22177): #2 ChangeNotifier.notifyListeners (package:flutter/src/foundation/change_notifier.dart:382:27)
E/flutter (22177): #3 FocusNode._notify (package:flutter/src/widgets/focus_manager.dart:1050:5)
E/flutter (22177): #4 FocusManager._applyFocusChange (package:flutter/src/widgets/focus_manager.dart:1646:12)
E/flutter (22177): #5 microtaskLoop (dart:async/schedulemicrotask.dart:40:21)
E/flutter (22177): #6 startMicrotaskLoop (dart:async/schedulemicrotask.dart:49:5)
