After the hack yesterday, a bunch of instances require you to logout and log back in again to reset some kind of token. It could be that. The error I was getting in Liftoff was just a general error most of the time, but the problem was I wasn't logged in properly.
I was having this issue yesterday on certain communities. When I went outside of Voyager, I noticed a language drop-down I had to select in order to post that didnβt exist in the app.