Log claims I&F not present while I have a fire dragon infront of me. Weird, I was NOT holding any staff or using it, and didnt happened while loading, but in a world once the dragon went into render distance.

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Thread: Render thread
Suspected Mods: NONE
Stacktrace:
at net.minecraftforge.logging.CrashReportExtender.lambda$dumpModLoadingCrashReport$7(CrashReportExtender.java:63) ~[forge-1.20.1-47.2.20-universal.jar%23807!/:?] {re:classloading}
-- MOD dragonseeker --
Details:
Mod File: /C:/Users/alfon/AppData/Roaming/gdlauncher_next/instances/Mines and Villages - SC2/mods/dragonseeker-1.2.0-1.20.1.jar
Failure message: Mod dragonseeker requires iceandfire 1.19.2- or above
Currently, iceandfire is not installed
Mod Version: 1.2.0-1.20.1
Mod Issue URL: http://my.issue.tracker/
Exception message: MISSING EXCEPTION MESSAGE

I can load Dragonseeker 1.2.0 1.20.1 and I&F 2.1.13-1.20.1-beta-2 in the same world and not get a crash, even with dragons present. Can you provide any more information as to what's causing the crash?