Useful or not, from you.
flutter Error: Error when reading 'bin/main.dart': The system cannot find the path specified.

Error: Error when reading 'bin/main.dart': The system cannot find the path specified. i am using the windows 10 , the vs code shows the above results when i debug the code, one thing that i have used to terminal in the vs Code, when i hit the "flutter run" the emulators show the app but it did not show the hot reload and and other options, terminal show that it may take unsuspected long time these are the output rror: Error when reading 'bin/main.dart': The system cannot find the path specified. Ignoring error posting over WebSocket. Bad state: StreamSink is closed #0 _StreamSinkImpl.add (dart:_http/http_impl.dart:536:7) #1 _WebSocketImpl.add (dart:_http/websocket_impl.dart:1213:11) #2 WebSocketClient.post (dart:vmservice_io/server.dart:78:18) #3 _RootZone.runUnary (dart:async/zone.dart:1379:54) #4 _FutureListener.handleValue (dart:async/future_impl.dart:126:18) #5 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:639:45) #6 Future._propagateToListeners (dart:async/future_impl.dart:668:32) <!-- Thank you for using Flutter!

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That's a useful answer
Without any help

The solution is to delete .vscode folder inside your project

thanks bro.it was really helpfull @YuriiChornyi