Erreur de connexion au serveur

Fatal error: Uncaught exception 'ExceptionMySQLDataBaseConnexion' with message 'Erreur de connexion au serveur bddmywrite. Erreur récupérée : Lost connection to MySQL server at 'reading initial communication packet', system error: 0 (2013)' in /space/www/sitimmo/data/releases/20170724065300/librairies/ubiflow/src/modele/bdd/mysql/MySQLDataBase.php:322 Stack trace: #0 /space/www/sitimmo/data/releases/20170724065300/librairies/ubiflow/src/modele/bdd/mysql/MySQLDataBase.php(1390): MySQLDataBase->connect() #1 [internal function]: MySQLDataBase::Instance('bddmywrite', 'sites', 'Jhog3zTJZUbB', 'sitimmo', NULL) #2 /space/www/sitimmo/data/releases/20170724065300/librairies/ubiflow/src/modele/bdd/mysql/MySQLDataBaseUsine.php(44): call_user_func_array(Array, Array) #3 /space/www/sitimmo/data/releases/20170724065300/php/class/controle/ControleurBdd.php(80): MySQLDataBaseUsine::Instancier_base_defaut() #4 /space/www/sitimmo/data/releases/20170724065300/init/bdd.php(65): ControleurBdd->verifier_etat_base() #5 /space/www/sitimmo/dat in /space/www/sitimmo/data/releases/20170724065300/librairies/ubiflow/src/modele/bdd/mysql/MySQLDataBase.php on line 322