What happens:

Game crashes when loading.

Affected Versions (Do not use "latest"):

• EnderIO: EnderIO-1.12.2-5.0.26
• EnderCore: EnderCore-1.12.2-0.5.31
• Minecraft: 1.12.2
• Forge: forge-1.12.2-14.23.5.2838
• SpongeForge? no
• Optifine? yes
• Single Player and/or Server? Mid game load

Your most recent log file where the issue was present:

crash-2020-03-08_13.09.48-client.txt

[pastebin/gist/etc link here]