Noone can spawn props

Hello im Matt and i run Matt’s Server which… ok im gunna go straight to the point. Noone apart from me can spawn props in my server. Also im getting the error which stops people downloading the lua cache file. I need help

Additional info:

Server hosted by clanbaselive.

What gamemode is your server using, and what is the error?

its using sandbox

i cant remember the lua error, and the other one doesnt have an error. only i can spawn props. Even the admins and superadmins cant!