Fatal error: Call to a member function on a non-object in /home/sites/site3/web/galle

Off-topic
1

hi, i want to make a personal photo gallery on this site, but it gives a fatal error :
“Fatal error: Call to a member function on a non-object in /home/sites/site3/web/gallery/classes/User.php on line 155”

How do i make my own album on this site?
greets from a noob

2

i’m having the exact same problem! could anyone help?

Please???