Normal Weapon Disappearance

Anyone knows the reason that the normal TTT weapons disappear for no reason?
eg. M16

I would say wizards and dragons.
But if you provide an error from console output then I would be more specific.

Could you be more specific? Single player or multi player? Your server or another’s? Errors?

The only things I could think of are these:
CSS content not mounted.
Deleted the weapons.

You have given us virtually nothing to go on.