Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 in /homepages/19/d670838069/htdocs/sammlung/Code/Db.php:54 Stack trace: #0 /homepages/19/d670838069/htdocs/sammlung/Code/Db.php(54): mysqli->query() #1 /homepages/19/d670838069/htdocs/sammlung/Code/Db.php(85): Db->query() #2 /homepages/19/d670838069/htdocs/sammlung/Code/Queries.php(549): Db->select() #3 /homepages/19/d670838069/htdocs/sammlung/start.php(80): WriteNumberOfExperiments() #4 {main} thrown in /homepages/19/d670838069/htdocs/sammlung/Code/Db.php on line 54