enabling tags cleanup policy leads to "Name regex can't be blank"
GitLab 13.12.2 CE self hosted (Omnibus).
Note: The option Enable container expiration and retention policies for projects created earlier than GitLab 12.7.
is ticked at instance level.
We have a project for which we cannot enable the cleanup policy feature. When saving the changes, we get the message "Name regex can't be blank".
However it works for some others projects.
I wonder what could be the problem ?