phpmyadmin blank on hostname

[shivahost]

I have a strange problem!

server_ip/phpmyadmin ===> ok
anydomain.com/phpmyadmin ===> ok

but sever_host_name/phpmyadmin ===> redirects to: server_host_name/phpMyAdmin/direct_login/index.php ==> blank!

and the strange thing is:

user_level phpmyadmin auto_login ===> ok which accessed with server_host_name/phpMyAdmin from server_host_name:2222/user/database

i have tested :

sever_host_name/webmail ===> ok
sever_host_name/roundube ===> ok

this happened today! yesterday I had no problem with: sever_host_name/phpmyadmin ===> ok

please help!

 

[shivahost]

I have to say I have tested phpmyadmin 4 and 5 versions and problem exists and I am using:

php ver 7.2
mariadb 10
apached 2.4 + nginx

and no update done in this week on this server!

 

[shivahost]

Problem solved! without any action!

 

[Richard G]

That's odd.
We have exactly the same issue, but only on a domain name when the customers is using the force redirect option (to www or non-www).