Build menu not working when on another server?

Every time I go on a certain server, I ge this Global Lua error words spamming my screen, not the model errors, program errors.

The one where it’s like
“Global attempt error”
“Global attempt error”
“Global attempt error”
“Global attempt error”

And I can’t start up my Spawn menu but everyone else can, and Adv. Dup won’t work for even if it does work.