If anybody runs into some script errors in private mp matches like I did, using different manifests solved it for me
download_depot 42680 42682 2661317971072643596
download_depot 42680 42683 1595601894688570808
download_depot 42680 42681 5651167211650965131
download_depot 42690 42691 4104640605720756125
please remember to clear your plutonium iw5 cache.
All credit goes to discord users Fry and Raine! Hope this helps someone.