Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ') GROUP BY ak2.article_id ) km ON a.article_id = km.article_id ...' at line 8 in /var/www/vhosts/ida.etu.mmi-unistra.fr/eraexplorer.ida.etu.mmi-unistra.fr/include/data_access.php:17 Stack trace: #0 /var/www/vhosts/ida.etu.mmi-unistra.fr/eraexplorer.ida.etu.mmi-unistra.fr/include/data_access.php(17): PDOStatement->execute() #1 /var/www/vhosts/ida.etu.mmi-unistra.fr/eraexplorer.ida.etu.mmi-unistra.fr/pages/product.php(105): select_data() #2 {main} thrown in /var/www/vhosts/ida.etu.mmi-unistra.fr/eraexplorer.ida.etu.mmi-unistra.fr/include/data_access.php on line 17