Minecraft v1.20.1
Minecolonies Compat v2.24
REI v12.1.725

When searching in the REI Collapsible Groups screen, the game will crash.
To get to this screen, go to Settings -> List -> Collapsible Groups -> Configure -> "+" Button -> Select Entries.
And then when trying to search for an item, that is when it crashes
Crash Report

Fixed on 1.20.1-2.25 version

Thanks for report. 👍
Fixed version will release soon.

Thanks!