Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 7 FATAL: server login has been failing, cached error: server conn crashed? (server_login_retry) server closed the connection unexpectedly This probably means the server terminated abnormally before or while processing the request. in /www/wwwroot/caomei2.com/app/Core/Database.php:30 Stack trace: #0 /www/wwwroot/caomei2.com/app/Core/Database.php(30): PDO->exec() #1 /www/wwwroot/caomei2.com/app/Core/Database.php(36): App\Core\Database->__construct() #2 /www/wwwroot/caomei2.com/app/Repositories/CategoryRepository.php(15): App\Core\Database::getInstance() #3 /www/wwwroot/caomei2.com/app/app_init.php(22): App\Repositories\CategoryRepository->__construct() #4 /www/wwwroot/caomei2.com/public/index.php(23): initApp() #5 {main} thrown in /www/wwwroot/caomei2.com/app/Core/Database.php on line 30