The mods don't match, I tried to replace them, but nothing worked. How to solve this problem? Is it just me?

Having the same issue

same problem, different minecraft version. There is no Patchouli for neoforge 1.20.1 and using the latest patchouli for neoforge is no good either (neoforge says it is not installed.)

Seems like there are two separate issues

@gidra146 please isntall patchouli

@zuperbuu For 1.20 TFC is built against Forge. You can use Neoforge if you want but we are built against forge 47.1.3

Otherwise we will need to see a crash log to diagnose