Unable to delete repository

[Config Sync CI Bot]

We have two obsolete repositories in this workspace that cannot be deleted, there status is currently unknown with 0B, the page wouldn't load when trying to open.

We've seen similar issue before https://community.atlassian.com/forums/Bitbucket-questions/Unable-to-delete-Git-repositories-due-to-Repository-currently/qaq-p/2713100#M104729. In our test the repository creation succeeded but the proceeding push events failed with message `repository is currently not available`, and the symptom continued when the test tried to remove this obsolete repo. 

We are wondering if there are more detailed error messages to understand what exactly was the issue that caused the repo to stuck in an unhealthy state. Thanks in advance!