Problem description: Recently, I configured the php environment for the server, apache2 php7.0 mysql; and installed phpmyadmin when everything else was successfully installed. After testing, it was found that Phpmyadmin was successfully installed, but it cannot be accessed with phpmyadmin. will be inaccessible.
There are several situations:
1. Domain name/phpmyadmin-> cannot be accessed
2. Domain name/myadmin-> can be accessed (phpmyadmin is renamed to myadmin here), but the access is very slow. Turning on debugging found that phpmyadmin.css.php could not be loaded.

Problem: As long as there is Phpmyadmin, it cannot be loaded. why is that?
I once suspected it was apache2 problem. I tried reinstalling apache2 and deleted the configuration and reinstalled it. still the same.