TYPO3 Core

Hi,

I've got a strange error message that shows DB username and password on home page. It comes after the hostname changed for no reason (maybe security issue?). This is the second website that had this problem today.

Here is the message :

#1: PHP Warning: mysqli::real_connect(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /home/httpd/vhosts/le-mouret.ch/httpdocs/typo3/sysext/core/Classes/Database/DatabaseConnection.php line 1199 (More information)

TYPO3\CMS\Core\Error\Exception thrown in file
/home/httpd/vhosts/mysite/httpdocs/typo3/sysext/core/Classes/Error/ErrorHandler.php in line 101.

Bellow it come the password and username (see the screenshot).

Thanks,
JR