add how to debug fd in the contributing guide
we need this in the contributing guide
When you find an error or a faulty behavior in FusionDirectory, here’s what to do:
- Go into FusionDirectory configuration, activate the displaying of PHP errors, and the TRACE debug level
- Do the same thing you did to get the problem and screenshot or copy all PHP errors with their traces, or the traces of the FD errors you encounter. (If there are too many, only the first one, it’s usually the root of the problem)
- Keep in mind that we don’t know your setup, so explain which plugin you have installed that might have a role in the problem. If the problem is linked to a specific LDAP entry, attach its LDAP dump.