Anti cheat kicks me when a forge map is loaded

Any time a forge map loads when I’m playing matchmaking, the anticheat system immediately kicks me. This issue is very frustrating as I cannot play with my friends who do not have this issue, I am surprised such an issue exists in the first place when this is a map that should already be recognized since it’s in the matchmaking playlist.

> ANTI-CHEAT INCIDENT:
> you cannot matchmake due to the following anti-cheat issue: Unknown file version (haloreach/maps/cex_beaver_creek.map).

[deleted]

I have the same problem wich graphicard do you guys have?