Erreur de connexion : SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known staque juga

Fatal error: Uncaught Error: Call to a member function prepare() on null in /home/clients/9e3878232dceedb4cab57da3ddb82471/web/principal/staque/functions/gestionUsers.php:218 Stack trace: #0 /home/clients/9e3878232dceedb4cab57da3ddb82471/web/principal/staque/inc/header.php(17): selectTotalMembers() #1 /home/clients/9e3878232dceedb4cab57da3ddb82471/web/principal/staque/index.php(20): include('/home/clients/9...') #2 {main} thrown in /home/clients/9e3878232dceedb4cab57da3ddb82471/web/principal/staque/functions/gestionUsers.php on line 218