Fatal error: Uncaught TypeError: mysqli_fetch_all(): Argument #1 ($result) must be of type mysqli_result, bool given in /www/htdocs/w01eeb12/drki.de/dosto-bib/functions.php:101 Stack trace: #0 /www/htdocs/w01eeb12/drki.de/dosto-bib/functions.php(101): mysqli_fetch_all(false) #1 /www/htdocs/w01eeb12/drki.de/dosto-bib/index.php(35): getBooksPerPage(Object(mysqli), -50, 50, '') #2 {main} thrown in /www/htdocs/w01eeb12/drki.de/dosto-bib/functions.php on line 101