Can't load Kernel binary: Invalid kernel binary format version. No active package webdev

Question

After running webdev serve it gives "Can't load Kernel binary: Invalid kernel binary format version. No active package webdev." this error

tried this and it added some dependencies

flutter packages pub global activate webdev

Answer 1

Delete the bin/cache directory in your Flutter installation directory, then run flutter doctor.

Answer 2

Open Flutter SDK folder, go to bin/cache and delete all the files + folders then run flutter doctor, and then flutter upgrade.

Answer 3

instead of webdev serve try to use flutter packages pub global run webdev serve and for getting and upgrading packages you can use flutter packages get and flutter packages upgrade respectively.

Answer 4

I would add that deleting the bin/caches folder seems to be the solution when your xcode build freezes on the launch screen. It seems to be related to upgrading Flutter and/or rolling back afterwards (my case).