database – Error on mysql only on front page

I’m using  Magento 2.3.6-p1

In Cli commands everything  works fine.

I can ran setup:upgrade, compilation, content:deploy, etc.

But, when I go to www.mystore.com I get the following:

2 exception(s):
Exception #0 (Zend_Db_Adapter_Exception): SQLSTATE(HY000) (2002) No such file or directory
Exception #1 (PDOException): SQLSTATE(HY000) (2002) No such file or directory
Exception #0 (Zend_Db_Adapter_Exception): SQLSTATE(HY000) (2002) No such file or directory

You can view the entire error log goingo to www.infotatil.pt

I tried everything I found in Google. 

Changed host from “localhohst” to “127.0.0.1” in  /app/etc/env.php,  triple checked mysql credentials, tried to connect to  mysql in commandline, everything works fine, but magento web front  continue giving this error.

Server info:
cPanel  WHm 94.08, mysql maria DB 10.3, php 7.3.27

Thank you for any help;