myVesta

I changed alias for phpmyadmin under /etc/phpmyadmin/apache.conf from default /phpmyadmin to /pppp

Phpmyadmin loads under new alias, (my.host.name/pppp) but I see only white/blank site.

In the source code of the phpmyadmin page under new alias I can see that PMA loads but only a white page appears, without login screen, the title of the displayed page is phpMyAdmin.
In the server logs I see errors like "No such file or directory", so it looks like something is blocking the display of this page but I don't know what.

This is a fresh install, only myVesta CP on debian 11, I testet the same on 2 another servers with debian10 and myvesta and debian11 and myvesta, but there is the same problem as well when I change phpmyadmin alias. I use and I will use phpmyadmin only under my hostname.

Apache, nginx, php74 restarted and also rebooted, cookies cleared, many times, but no change
Maybe I have to install something? How to solve it?

Hi, I tried again many times, many hours, and it still doesn't work,
I tested the same in hestiacp and froxlor and it works as it should,
Alias changed, reload apache and everything is OK.

Why is it not possible in myvesta. it's important, it's about security.
Could you please take a look at it in your spare time.