enter image description hereOn opening dart devtools in VS its showing Dart devtools exited with code 255 . I even tried to activating it from terminal in VS by typing flutter pub global activate devtools but its showing could not find a command named “global” for “flutter pub” error shown on terminal error again shown after activating devtools
7 Answers
Instead of using flutter pub global activate devtools ,
Use this :
pub global activate devtools
It's the correct way to activate devtools (if you have pub in your path)
Info : You could use
flutter pub global activate devtools,if you haveflutterin your path .
You have two solutions:
Update your flutter version
write
flutter pub pub global activate my_package(yes,pubis written twice)
Try to disable your antivirus for like 5 minutes and then go to the flutter directory
C:\src\flutter
and run the command
flutter pub global activate devtools
Note: The flutter path should be set in env variables before running this.
I was experiencing this same issue, and also getting error messages when viewing extension pages
Error loading webview: Error: Could not register service workers: TypeError: Failed to register a ServiceWorker
The solution that fixed both (the error 255 Dart DevTools, and this webview error) was found here (kill all instances of VS Code, then clear VS Code caches).
I am a mac user so you can use this command to enable dart.
export PATH="/Users/<MAC_USER_NAME>/Desktop/developer/flutter/bin/cache/dart-sdk:$PATH"
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