Warning: PDO::query(): MySQL server has gone away in /var/www/ps_cignal/classes/db/DbPDO.php on line 165

Warning: PDO::query(): Error reading result set's header in /var/www/ps_cignal/classes/db/DbPDO.php on line 165

Fatal error: Uncaught PrestaShopException: Link to database cannot be established: SQLSTATE[HY000] [2002] Connection refused in /var/www/ps_cignal/classes/db/DbPDO.php:136 Stack trace: #0 /var/www/ps_cignal/classes/db/Db.php(379): DbPDOCore->connect() #1 /var/www/ps_cignal/classes/db/Db.php(613): DbCore->query('\n ...') #2 /var/www/ps_cignal/classes/module/Module.php(340): DbCore->executeS('\n ...') #3 /var/www/ps_cignal/modules/registrationfields/registrationfields.php(44): ModuleCore->__construct() #4 [internal function]: RegistrationFields->__construct() #5 /var/www/ps_cignal/src/Core/Foundation/IoC/Container.php(123): ReflectionClass->newInstance() #6 /var/www/ps_cignal/src/Core/Foundation/IoC/Container.php(153): PrestaShop\PrestaShop\Core\Foundation\IoC\Container->makeInstanceFromClassName('registrationfie...', Array) #7 /var/www/ps_cignal/src/Core/Foundation/IoC/Container.php(166): PrestaShop\PrestaShop\Core\Foundation\IoC\Container->doMake('registrationfie...', Array) #8 /var/www/ps_cignal in /var/www/ps_cignal/classes/db/DbPDO.php on line 136