Minecolonies issue

[Zackman6344]

Basic questions:

• I am actually using ketting, and not any other software (e.g. magma)
• I am using the latest Ketting version at the time of writing for the Minecraft version, that I am using
• I have provided full server logs and not a crash-report
• I have checked all items without reading.
• I have provided proper reproduction steps
• I have ticked all boxes

What Minecraft Version is your Server on?

1.20.1

Full Ketting Version

v1.20.1-47.2.20-0.2.5

Description of behavior

ATM 9 server players can't connect after importing due to some issue with minecolonies. I try to connect and it returns an error and "Invalid Player Data". I expect for players to be able to connect.

Reproduction Steps

Steps to reproduce the behavior:
1. Use above Version with the modpack ATM 9 with the version 0.2.60, while having multiple minecolonies on the map in the original forge server 
2. Run the server
3. See the minecolonies error

Logs

https://mclo.gs/f4waKsW#L5236

Additional context

No response

[Zackman6344]

Tested with a different version (0.2.5) with the same results.
debug.log

[Zackman6344]

Attempted with the latest version of forge (47.3.1) and ketting (0.2.23), server and game refused to start. This is expected, as I'm playing ATM 9 and I assume they needed the specific version of forge that I changed it from, but I still wanted to try it.