Fatal error: Uncaught PrestaShopException: Link to database cannot be established: SQLSTATE[HY000] [2002] Connection refused in /var/www/html/classes/db/DbPDO.php:136 Stack trace: #0 /var/www/html/classes/db/Db.php(379): DbPDOCore->connect() #1 /var/www/html/classes/db/Db.php(613): DbCore->query() #2 /var/www/html/classes/Hook.php(1161): DbCore->executeS() #3 /var/www/html/classes/Hook.php(714): HookCore::getAllHookRegistrations() #4 /var/www/html/classes/Hook.php(798): HookCore::getHookModuleExecList() #5 /var/www/html/classes/Dispatcher.php(596): HookCore::exec() #6 /var/www/html/classes/Dispatcher.php(249): DispatcherCore->loadRoutes() #7 /var/www/html/classes/Dispatcher.php(207): DispatcherCore->__construct() #8 /var/www/html/index.php(28): DispatcherCore::getInstance() #9 {main} thrown in /var/www/html/classes/db/DbPDO.php on line 136