Addon Help

I’ve tried excessively to get custom weapons implemented into my gamemode! I’ve tried everything from using resource.AddFile to resource.addWorkshop, creating a lua script in lua/autorun/server. I’ve tried countless amounts of addons. Pictured in the screenshot below is the attempt of using the m9k addons via a collection on the steam workshop. This is unfortunely the most success I’ve had with this, as most others gave lua errors, these however, give texture errors. The scripting on the weapons work perfectly, but the textures/models? can’t be seen from both in menu and in game, as you can see the screenshot.

tl;dr texture errors when using add-ons via the steam workshop (scripting works fine)

Imgur