Warning: Undefined variable $photoCallback in /home/canvas/htdocs/canvas.tibyhost.com/app/Controllers/PageController.php on line 82

Fatal error: Uncaught TypeError: preg_replace_callback(): Argument #2 ($callback) must be a valid callback, no array or string given in /home/canvas/htdocs/canvas.tibyhost.com/app/Controllers/PageController.php:82 Stack trace: #0 /home/canvas/htdocs/canvas.tibyhost.com/app/Controllers/PageController.php(82): preg_replace_callback() #1 /home/canvas/htdocs/canvas.tibyhost.com/app/Core/Router.php(48): PageController->show() #2 /home/canvas/htdocs/canvas.tibyhost.com/index.php(422): Router->dispatch() #3 {main} thrown in /home/canvas/htdocs/canvas.tibyhost.com/app/Controllers/PageController.php on line 82