Hello from 2022. I had that problem once. In my case, the version of a campaign file that I had was older than the host
I got kicked out from Yama in chapter 4 because the version of my campaign file was older than the host server I connected to. I fixed the problem by subscribing to the mod on steam workshop to get the latest version and the problem was solved.

Sometime the host may have an older version. There is no version archive to download so you may be out of luck.