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/vincenv/www/backlight/modules/module-framework/dao/PdoExtended.php(224): PdoExtended->_throwSqlQueryException('SELECT id FROM ...', Array, 'Expected one or...') #1 /home/vincenv/www/backlight/modules/module-framework/dao/PdoExtended.php(322): PdoExtended->selectRowOrNull('SELECT id FROM ...', Array) #2 /home/vincenv/www/backlight/modules/module-framework/Framework.php(454): PdoExtended->selectFieldOrNull('SELECT id FROM ...', Array) #3 /home/vincenv/www/backlight/modules/module-framework/Framework.php(432): Framework->handleLanguage(Object(DesignerApplicationHelper), Object(DesignerConfigManager)) #4 /home/vincenv/www/backlight/modules/module-framework/Framework.php(150): Framework->initApplication() #5 /home/vincenv/www/backlight/modules/module-framework/Framework.php(41): Framework->init() #6 /home/vincenv/www/index.php(37): Framework->__construct('.', Array) #7 {main}|URL: /index.php