Turning on shaders sometimes ctd

When I load into singleplayer the game will if shaders on while loading, but if I turn shaders off, load into the world, then turn the shaders back on, it will work fine, also idk if distant horizons has anything too do with it, but its in my modlist as well

The game crashed whilst unexpected error
Error: java.lang.NoClassDefFoundError: Could not initialize class net.irisshaders.iris.pathways.FullScreenQuadRenderer

If I posted this in the wrong place my bad, first time posting here
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