Possible Fixes

Yes

Modpack Version

2.11

What happened?

I can't join my server. I did the newest update and this message appear:

Channel [mekanism:batch_security] failed to connect: Channel of mod "Mekanism" failed to connect: The client wants the payload to be version: 10.7.7, but the server wants it to be version: 10.7.8!

latest.log

https://gist.github.com/IviSpiel/33ad02b4d20a7cb7d49f05c50310951f

Developer reports

No response

I found out there was an update on the Server which i had to force manualy and now its working again!

I have this issue as well, with an identical error message but using modpack version 2.12, and a different server. I have confirmed that my client instance has Mekanism 10.7.8, despite the assertion of the error message. Additionally, a following error message said my version of Neoforge was outdated, while my version is 21.1.90 and matches the server.

Here's my log for purposes of comparison:
latest.log