Creating new repository ends with 500 error

Creating new repository ends with 500 error. After this error when listing repositories the repository is there but clicking on it causes another 500 error.

The URL of the repo:
https://bitbucket.org/alphasense-ondemand/as-parent/admin

The error code on the 500 error page:
3535675572b143358c11db0b62df6855