CTRL+F simpleclans showed me 13,000 mentions of SimpleClans, I assume its trying to iterate through a task for every single crew, nobody is shown as in a crew now.
Moved from 2.7.22 to 2.7.23 on paper 1.12.2.

https://gist.githubusercontent.com/FrozenBeard/04438dc37f2cc27c8914323bfb137a77/raw/01e054aa1941e128785e94195719ed900decf375/latest.log

Is this your complete log?
This error shouldn't break the plugin, it's just a debug message (that I realize now I should've ignored).
Try to look for something like: "Error occurred while enabling"

Sorry "fully broken" as in nobody was in crews, none of the features worked etc.
It didnt disable the plugin. Just stopped everything working in it.
What version of GP did you test against? 1.12.2 can only use up to 16.8.

Did you find a different error?

What version of GP did you test against? 1.12.2 can only use up to 16.8.

I don't think GP is the cause, SimpleClans doesn't depend on it.

Nope I didn't find any more error's, I can try a debug version locally of that helps?

You say none of the features were working. What do you mean? What happens if you use the /clan list?

Run this SQL query UPDATE sc_players SET resign_times = "{}";

Ok done, shall I use 2.7.25, or will that not work on 1.12.2?

You can continue using 2.7.23
That SQL query should fix this problem

Also, 2.7.25 breaks the vitals command and teleportation on 1.12