Both client and server need to be updated. To make sure, check if you see B163 mentioned on the upper right of the intro-screen of the client when starting 7d2d.
On the server look into the logfile, there should be a line near the start of the logfile similar to this
2020-07-05T13:20:32 6.248 INF Version: Alpha 19 (b157) Compatibility Version: Alpha 19, Build: Linux 64 Bit
If you see "b157" you haven't updated yet or did not restart the server.
PS: If you make a bug report or general support request, you need to get the logfile anyway, so you can as well check this yourself first