Could not find an option named "web-server-debug-protocol" when running a Flutter project through VSCode

Question

I am using VSCode ad my Flutter development IDE. It worked well until this afternoon. When I ran the project, Could not find an option named "web-server-debug-protocol"showed up. I have no idea what goes wrong. I googled "web-server-debug-protocol" and only found two links showed that it exists in the flutter_command.dart. Did anyone meet the similar problem? Any suggestions about that? Thanks!

UPDATE I solved this issue by upgrading my Flutter.

Andry

what version did you used? mine is 3.10.1 but still got the error – Navel

Flutter 1.19.0-1.0.pre – Andry

Restart VsCode, if its not working then check you channel and change it to stable and upgrade the stable version to latest and then try – Bisset

That happened to me, when I had two project opened in VS Code - one from Beta channel, other from Stable. Reopening VS Code fixed it. – Beckybecloud

Answer 1

echo.

I reinstalled Flutter extension in VS Code and it worked properly.

good flutter life!

Wrack

Thanks for the answer. I reinstalled Flutter extension too in the beginning, but it didn't work for me. I ended up upgrading Flutter then it works. – Andry

Answer 2

For me restarting the VS Code did the Job.

Boxfish

Answer 3

Just restart VS code. It often happens when you switch between Flutter channels, but restart should fix it...

Capers

Answer 4

I had the same problem, I just upgraded Flutter and it works.

Cellarage