Deprecated function: dirname(): Passing null to parameter #1 ($path) of type string is deprecated

There isn't much to go on here. Can we get a stack trace please? Is this distinct from 🐛 Deprecated function: dirname(): Passing null to parameter #1 ($path) of type string is deprecated Needs work ?

We don't need separate issues for every release branch. If the other issue fixes the bug, the way forward is to get it reviewed and fixed. It looks like the patch on that issue adds some defensive coding but we need the main cause determined.