@Peter-Harrald Hi Peter, sorry for the late response. I was still trying to duplicate the problem and then you mentioned it was fixed. My best guess is that one of the apache configuration files wasn't setup properly. Re-installing the package is like the software version of "turning it off and on again", lol.
@chee-sum-kong Hmmm, seems that there might be some bug in the code for phpmyadmin. According to this post, this bug should have been addressed in version 18.104.22.168 of phpmyadmin: https://github.com/phpmyadmin/phpmyadmin/issues/11892. Can you check which version you are running? We may need to manually upgrade the package to a newer version.