当我在网络上运行我的项目时，异常消息和堆栈跟踪是
"Should never encounter KeyData when transitMode is rawKeyData."
at Object.throw_ [as throw] (http://localhost:2621/dart_sdk.js:5061:11)
at Object.assertFailed (http://localhost:2621/dart_sdk.js:4986:15)
at hardware_keyboard.KeyEventManager.new.handleKeyData (http://localhost:2621/packages/flutter/src/services/restoration.dart.lib.js:5334:28)
at http://localhost:2621/dart_sdk.js:160131:47
at Object.invoke (http://localhost:2621/dart_sdk.js:179656:7)
at _engine.EnginePlatformDispatcher.__.invokeOnKeyData (http://localhost:2621/dart_sdk.js:160131:17)
at _engine.KeyboardBinding.__.[_onKeyData] (http://localhost:2621/dart_sdk.js:158922:49)
at _engine.KeyboardConverter.new.handleEvent (http://localhost:2621/dart_sdk.js:159210:16)
at http://localhost:2621/dart_sdk.js:158929:74
at loggedHandler (http://localhost:2621/dart_sdk.js:158906:43)
Error: Assertion failed: file:///E:/flutter_windows_2.5.2-stable/flutter/packages/flutter/lib/src/services/hardware_keyboard.dart:787:16