Expected one or zero rows from SQL query, multiple rows returned. sql: 'SELECT id FROM language WHERE iso_language_code=?' params: array ( 0 => 'en', )|#0 /home/yedakic/www/thomas-marti_2.ch/backlight/modules/module-framework/dao/PdoExtended.php(221): PdoExtended->_throwSqlQueryException('SELECT id FROM ...', Array, 'Expected one or...') #1 /home/yedakic/www/thomas-marti_2.ch/backlight/modules/module-framework/dao/PdoExtended.php(319): PdoExtended->selectRowOrNull('SELECT id FROM ...', Array) #2 /home/yedakic/www/thomas-marti_2.ch/backlight/modules/module-framework/Framework.php(455): PdoExtended->selectFieldOrNull('SELECT id FROM ...', Array) #3 /home/yedakic/www/thomas-marti_2.ch/backlight/modules/module-framework/Framework.php(433): Framework->handleLanguage(Object(DesignerApplicationHelper), Object(DesignerConfigManager)) #4 /home/yedakic/www/thomas-marti_2.ch/backlight/modules/module-framework/Framework.php(151): Framework->initApplication() #5 /home/yedakic/www/thomas-marti_2.ch/backlight/modules/module-framework/Framework.php(41): Framework->init() #6 /home/yedakic/www/thomas-marti_2.ch/index.php(37): Framework->__construct('.', Array) #7 {main}|URL: /index.php