unable to start game online

After I start on online game, I get a message that I timed out and shows the analytics screen with No data. Looking at the terminal, I received this error message:

15:34:06 Warning/GameAnalytics: sdk error failed. response code not 200. status code: BadRequest, description: Bad Request, body: [{"event":{"v":2,"category":"sdk_error","sdk_version":"mono 1.1.6","os_version":"linux 5.4.0","manufacturer":"unknown","device":"unknown","platform":"linux","connection_type":"lan","type":"rejected"},"errors":[{"error_type":{"missing_required_property":"error_area"},"path":""},{"error_type":{"missing_required_property":"error_category"},"path":""}]}]

This was working fine last week, today it started to have this issue.

I followed the steps on https://zerok.itch.io/zero-k mainly:
wget https://zero-k.info/lobby/Zero-K.exe
chmod u+x Zero-K.exe
mono Zero-K.exe

like I said, it was working fine yesterday.
http://zero-k.info/Battles/Detail/1120785 worked yesterday.
http://zero-k.info/Battles/Detail/1121444 and my games after did not.

No changes on my side, I tried to fix it by:
rebooting computer
rebooting router
reinstalling zero-k to a different directory

all had the same issue.

A long shot, but could work. Check the disk for errors, even for bad blocks maybe. Then completely remove mono and reinstall it. It feels to me a little like you may have a truncated config file somewhere.