Error when trying to Scav

For some reason, I cannot scav anywhere besides factory. I get the error "UNHANDLED RESPONSE: /client/match/group/invite/cancel-all" when trying to scav anywhere else, and I am forced to close the game after the error. I have practice mode disabled when doing this, as I would like to keep the gear and exp earned obviously. Not sure what to do Would appreciate any help!

There was a post about this thrown into the trash bin yesterday, not sure why because the proposed solution from Chomp did not make much sense. Said something about disabling COOP, which is disabled by default and cannot be messed with in the settings anyways.

Ok, never mind feel free to trash this post. Upon a reinstall, the issue solved, and now I see what Chomp was saying. Before my reinstall, it allowed me to un-check practice mode, and did not save progress if played in practice mode. On this fresh install, it is now checked and alerts me that progress will be saved. Sorry for the fuss