The following assertion was thrown during a platform message callback:
Assertion failed: file:///C:/flutter/packages/flutter/lib/src/services/hardware_keyboard.dart:437:16
!_pressedKeys.containsKey(event.physicalKey)
"A KeyDownEvent is dispatched, but the state shows that the physical key is already pressed. If this occurs in real application, please report this bug to Flutter. If this occurs in unit tests, please ensure that simulated events follow Flutter's event model as documented in HardwareKeyboard. This was the event: KeyDownEvent#6f703(physicalKey: PhysicalKeyboardKey#70009(usbHidUsage: \"0x00070009\", debugName: \"Key F\"), logicalKey: LogicalKeyboardKey#00066(keyId: \"0x00000066\", keyLabel: \"F\", debugName: \"Key F\"), character: \"f\", timeStamp: 0:00:11.550000)"
The following assertion was thrown during a platform message callback: Assertion failed: file:///C:/flutter/packages/flutter/lib/src/services/hardware_keyboard.dart:437:16 !_pressedKeys.containsKey(event.physicalKey) "A KeyDownEvent is dispatched, but the state shows that the physical key is already pressed. If this occurs in real application, please report this bug to Flutter. If this occurs in unit tests, please ensure that simulated events follow Flutter's event model as documented in
HardwareKeyboard. This was the event: KeyDownEvent#6f703(physicalKey: PhysicalKeyboardKey#70009(usbHidUsage: \"0x00070009\", debugName: \"Key F\"), logicalKey: LogicalKeyboardKey#00066(keyId: \"0x00000066\", keyLabel: \"F\", debugName: \"Key F\"), character: \"f\", timeStamp: 0:00:11.550000)"When the exception was thrown, this was the stack: C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddcruntime/errors.dart 251:49 throw C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 29:3 assertFailed packages/flutter/src/services/hardware_keyboard.dart 437:47
packages/flutter/src/services/hardware_keyboard.dart 451:14 [_assertEventIsRegular]
packages/flutter/src/services/hardware_keyboard.dart 543:5 handleKeyEvent
packages/flutter/src/services/hardware_keyboard.dart 821:57 handleRawKeyMessage
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async
packages/flutter/src/services/hardware_keyboard.dart 808:51 handleRawKeyMessage
packages/flutter/src/services/platform_channel.dart 73:49
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async
packages/flutter/src/services/platform_channel.dart 72:58
packages/flutter/src/services/binding.dart 379:35
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 84:54 runBody
C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/patch/async_patch.dart 123:5 _async
packages/flutter/src/services/binding.dart 376:98
C:/b/s/w/ir/cache/builder/src/out/host_debug/flutter_web_sdk/lib/_engine/engine/platform_dispatcher.dart 1034:13 invoke2
C:/b/s/w/ir/cache/builder/src/out/host_debug/flutter_web_sdk/lib/ui/src/ui/channel_buffers.dart 25:5 invoke
C:/b/s/w/ir/cache/builder/src/out/host_debug/flutter_web_sdk/lib/ui/src/ui/channel_buffers.dart 65:7 push
C:/b/s/w/ir/cache/builder/src/out/host_debug/flutter_web_sdk/lib/ui/src/ui/channel_buffers.dart 130:16 push
C:/b/s/w/ir/cache/builder/src/out/host_debug/flutter_web_sdk/lib/_engine/engine/platform_dispatcher.dart 302:25 invokeOnPlatformMessage
C:/b/s/w/ir/cache/builder/src/out/host_debug/flutter_web_sdk/lib/_engine/engine/keyboard.dart 130:39 [_handleHtmlEvent]
C:/b/s/w/ir/cache/builder/src/out/host_debug/flutter_web_sdk/lib/_engine/engine/keyboard.dart 44:7