Serious Engine problem, LUA Related? Maybe

I got this error
Engine error: SV_PackEntity: SnagChangeFrameList mismatched number of props[131 vs 145]

And I got no idea if that’s something I did or maybe the new gmod update?

(User was banned for this post ("Undescriptive thread title" - Gran PC))

What were you doing at the time when it happened?

Nothing it happens really randomly, the server is usually up for a few hours and suddenly it happens

I am not getting it, so I doubt it’s fault of engine, otherwise everyone would be getting it whom updated gmod recently.