Currently, if you are over your plan limit, you may not see any warning on the bitbucket site. We are working to fix this asap. This issue is to help those encountering errors when pushing like
fatal: https://firstname.lastname@example.org/team/repo.git/info/refs not valid: is this a git repository?
To resolve this issue, visit your plans and billing page and remove/verify the number of users with some level of access to your repositories. This can be found at: