When loading a fresh 1.18.1 instance with:

• FML 0.12.12
• FAPI 0.46.0+1.18
• EC 1.18-fabric0.43.1-1.7

the game crashes with the following log: crash log

The game launches normally in the same instance, with the older FAPI 0.45.2+1.18. normal log

Thanks for reporting this! Should be fixed in the 1.18.1 version which I just published on Curseforge and Modrinth.