Fatal error: Uncaught TypeError: Argument 2 passed to addPictureCaption() must be of the type string, null given, called in /var/www/clients/client0/web17/web/controllers/machinekits/machinekit.file on line 36 and defined in /var/www/clients/client0/web17/web/controllers/machinekits/machinekit.file:70 Stack trace: #0 /var/www/clients/client0/web17/web/controllers/machinekits/machinekit.file(36): addPictureCaption() #1 /var/www/clients/client0/web17/web/classes/template.class.php(285): include('/var/www/client...') #2 /var/www/clients/client0/web17/web/classes/template.class.php(150): template::content() #3 /var/www/clients/client0/web17/web/index.php(121): template->temp() #4 {main} thrown in /var/www/clients/client0/web17/web/controllers/machinekits/machinekit.file on line 70