I am uploading new app bundle to play console and it is saying after uploading Version code 1 has already been used. Try another version code.
I have changed version number in pubspec.yaml from version number: 1.0.0+1 to 2.0.0+1 even though it is saying the same error
For Flutter only:
Goto Pubspec.yaml file and find version key and Change the value after the + sign.
For Example:
In your pubspec.yaml file, if your version is like this version: 1.0.0+1 then change it to version: 1.0.0+2