Fatal error: Uncaught TypeError: mb_substr(): Argument #3 ($length) must be of type ?int, string given in /home/tury/htdocs/hotel/id.php:249 Stack trace: #0 /home/tury/htdocs/hotel/id.php(249): mb_substr() #1 /home/tury/htdocs/hotel/index.php(46): require_once('...') #2 {main} thrown in /home/tury/htdocs/hotel/id.php on line 249