Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, bool given in /pages/75/c9/d0016151/home/htdocs/domain-auf-schluer/comment.php:7 Stack trace: #0 /pages/75/c9/d0016151/home/htdocs/domain-auf-schluer/comment.php(7): mysqli_query(false, 'select id from ...') #1 {main} thrown in /pages/75/c9/d0016151/home/htdocs/domain-auf-schluer/comment.php on line 7