The volumes issue appears to be an ongoing issue as that same error has been found by others:
So that one awaits someone from Fly to investigate.
However to debug the deploy-hanging issue, can you try adding a debug log in front? This: LOG_LEVEL=debug fly deploy
. That should show a bit more detail about what it can’t do and why it’s hanging.
If that doesn’t reveal anything helpful. these are some other tricks that may help. Of course they won’t make any difference if this problem is at Fly’s end but worth a try while you wait: