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1. Minecraft version: 1.12.2-forge-14.23.5.2854
2. Galacticraft version: 1.12.2-4.0.2.280
3. GalaxySpace version: 1.12.2-2.0.14
4. AsmodeusCore version (for 2.0.1 version and above): 1.12.2-0.0.20
5. Side (Single player (SSP), Multiplayer (SMP), or SSP opened to LAN (LAN)): Multiplayer (client crashes)
6. Other add-ons: None

Description of the issue:

• Server side is fine. Client loads. However, about 1-2 seconds after joining the server, the client crashes. Seems to be related to "leaves2", variant "dark_oak". Seed: 3926758518314452153.
• I regenerated the world several times, and finally on an island spawn without trees it didn't crash (didn't note that seed). I also didn't explore to find out if looking at a dark oak tree would cause a crash.
• There was no crash when removing only GalaxySpace-1.12.2-2.0.14.jar (leaving AsmodeusCore-1.12.2-0.0.20.jar, GalacticraftCore-1.12.2-4.0.2.280.jar, Galacticraft-Planets-1.12.2-4.0.2.280.jar, MicdoodleCore-1.12.2-4.0.2.280.jar), and regenerating with the above seed 3926758518314452153.

Screenshot/Video:

Attached log file (or url on pastebin.com):
crash-2020-10-28_16.48.16-client.txt

Known bug, maybe try other seed?

This seed works (or at least doesn't crash at spawn): -3462035780234417933

Try AsmodeusCore 0.0.21