When i try to join my friends server I crash upon joining with the error: The game crashed whilst ticking entity
Error: java.lang.NullPointerException: Cannot invoke "java.util.Map.getOrDefault(Object, Object)" because "ichttt.mods.firstaid.common.registries.FirstAidRegistryLookups.DEBUFF_BUILDERS" is null

launcher_log8.txt

Sorry, but I cannot reproduce this. Does this always happen? Are other mods involved?

Should be fixed in 1.20.1-1.1