PDOException: SQLSTATE[42000]: Syntax error or access violation: 1055 'bdvberat.liste.liste_name' isn't in GROUP BY File=/var/www/vhosts/bdv-beratung.de/app/Models/MusterbriefListe.php Line=101 #0 [internal function]: PDO->query('SELECT `liste`....') #1 [internal function]: Phalcon\Db\Adapter\Pdo->query('SELECT `liste`....', NULL, NULL) #2 [internal function]: Phalcon\Mvc\Model\Query->_executeSelect(Array, NULL, NULL) #3 /var/www/vhosts/bdv-beratung.de/app/Models/MusterbriefListe.php(101): Phalcon\Mvc\Model\Query->execute() #4 /var/www/vhosts/bdv-beratung.de/app/Controllers/Web/ContentController.php(291): App\Models\MusterbriefListe::getMusterbriefListen() #5 /var/www/vhosts/bdv-beratung.de/app/Controllers/Web/ContentController.php(108): App\Controllers\Web\ContentController->setViewModulVars(Object(App\Models\Modul)) #6 /var/www/vhosts/bdv-beratung.de/app/Controllers/Web/ContentController.php(58): App\Controllers\Web\ContentController->setView() #7 [internal function]: App\Controllers\Web\ContentController->indexAction('/musterbriefe') #8 [internal function]: Phalcon\Dispatcher->callActionMethod(Object(App\Controllers\Web\ContentController), 'indexAction', Array) #9 [internal function]: Phalcon\Dispatcher->_dispatch() #10 [internal function]: Phalcon\Dispatcher->dispatch() #11 /var/www/vhosts/bdv-beratung.de/httpdocs/index.php(52): Phalcon\Mvc\Application->handle() #12 {main}