Warning: PDO::prepare(): MySQL server has gone away in /var/www/d2/data/www/vendor/propel/propel/src/Propel/Runtime/Connection/PdoConnection.php on line 152

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in /var/www/d2/data/www/vendor/propel/propel/src/Propel/Runtime/Connection/PdoConnection.php:152 Stack trace: #0 /var/www/d2/data/www/vendor/propel/propel/src/Propel/Runtime/Connection/PdoConnection.php(152): PDO->prepare('SELECT groups.i...', Array) #1 /var/www/d2/data/www/vendor/propel/propel/src/Propel/Runtime/Connection/StatementWrapper.php(75): Propel\Runtime\Connection\PdoConnection->prepare('SELECT groups.i...', NULL) #2 /var/www/d2/data/www/vendor/propel/propel/src/Propel/Runtime/Connection/ConnectionWrapper.php(383): Propel\Runtime\Connection\StatementWrapper->prepare(NULL) #3 /var/www/d2/data/www/vendor/propel/propel/src/Propel/Runtime/ActiveQuery/Criteria.php(2640): Propel\Runtime\Connection\ConnectionWrapper->prepare('SELECT groups.i...') #4 /var/www/d2/data/www/vendor/propel/propel/src/Propel/Runtime/ActiveQuery/ModelCriteria.php(1988): Propel\Runtime\ActiveQuery\Criteria->doSelect(Object(Propel\Runtime\Connect in /var/www/d2/data/www/vendor/propel/propel/src/Propel/Runtime/ActiveQuery/Criteria.php on line 2648