USA - Game crash when doing peace conference as USA against Japan

[tell32]

Quick questions
OS: Windows 10
HOI4 version: 1.12.4
Kaiserreich version: 0.22.3
List any other mods used: Just the Kaiserreich music mod
Were you using Steam? Yes
Were you in multiplayer? No
Which expansions do you NOT have?
I have all expansions

Explanation of the issue:
Game crashes when I click on something in the peace conference, where I'm playing as USA and just defeated Japan.

Steps to reproduce:
see youtube video.
1.

Other info:

Possible cause:
Looking at the error log in the multiple crash folders from each attempt to do the peace conference. I believe this line has something to do with it
[18:33:58][triggerimplementation.cpp:15742]: common/scripted_effects/LEC effects (Legation Cities).txt:256: is_ally_with country is not valid
At least, its the last error line before it crashes.

Log file:

hoi4_20221031_183410.zip
I added the crash folder.

Screenshots / Video:
https://www.youtube.com/watch?v=3ot_VoMUCWo

Save game:

autosave.zip

[Alpinia]

Already reported and fixed, will come with the next patch.