Connection closed - mismatched mod channel list

Hello Aternos team,

Yesterday I've been playing with my friends until 04:00 CET and the server worked properly.

Today I cannot enter the server because we get this error message.

We are using the Modpack better minecraft 1.16.5 only.

This is the log link - https://mclo.gs/5efipFR

Can you help us with this?

Really appreciated

Quote from Roman

The pack got updated. Make sure you have the up-to-date version of the pack also on your computer.

Really appreciated, we are really newbies on the mod way. Many thanks, Now we know.