Flutter Web : "Should never encounter KeyData when transitMode is rawKeyData."

When I run my project on web the Exception message and stack trace was

"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