Minecraft crashes when I load shaders (Complementary Unbound r5.1.1)

I am using Minecraft 1.20.4, and the version of Iris that I use is 1.6.13.

Each time I attempt to load Complementary Unbound in Minecraft, the game crashes and throws an exit code of 6. What might be the issue here?

FULL LOGS: https://mclo.gs/LUjlFgU
mclo.gs
562 lines | 1 error
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