Game won't launch 1.21.4

I've downloaded both the latest versions of neoforge and forge and the game won't launch with either. For Neoforge the game instantly shuts down with exit code:1. And for my forge the game launches but it freezes on the loading screen. Idk if I've installed the wrong mods for DH to work but i'm lost.

Solution:

delete optifine and indium, and get the 1.21.4 version of iris

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