'snap' isn't the package that you think it is. Maybe you meant 'snapd'? But...the flutter snap is published by the SnapCraft community and is not part of Ubuntu as most snaps aren't.
'snap info flutter' in a terminal shows that issues should be reported at: https://github.com/flutter/flutter/issues https://snapcraft.io/flutter also gives this information. ** Changed in: snap (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2085697 Title: Flutter snap gives problem in 'flutter doctor' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snap/+bug/2085697/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs