Sildur's Enhanced Default shadows causes a crash in nether

[RancerRex]

As the titles indicates, there is a crash that happens when shadows are enabled when entering the nether, it's an instantaneous crash. I'm using Fabric 1.21 with the Iris mod, it might be a crash with iris itself, but with other shaders this crash does not happen. Here is a snippet of the crash repport: Description: Unexpected error java.lang.NullPointerException: Cannot invoke "net.minecraft.class_284.method_35660()" because "shader.field_29470" is null at net.diebuddies.render.MainRenderer.setupModelViewMatrix(MainRenderer.java:441) at net.diebuddies.render.MainRenderer.render(MainRenderer.java:406) at net.diebuddies.render.MainRenderer.renderAll(MainRenderer.java:222) at net.minecraft.class_761.handler$dch000$physicsmod$renderMain(class_761.java:13687) at net.minecraft.class_761.method_3251(class_761.java:15753) at net.minecraft.class_761.invokeRenderSectionLayer(class_761.java) at net.irisshaders.iris.shadows.ShadowRenderer.renderShadows(ShadowRenderer.java:462) at net.irisshaders.iris.pipeline.IrisRenderingPipeline.renderShadows(IrisRenderingPipeline.java:1020) at net.minecraft.class_761.handler$bni000$iris$renderTerrainShadows(class_761.java:7782) at net.minecraft.class_761.method_22710(class_761.java:977) at net.minecraft.class_757.method_3188(class_757.java:1087) at net.minecraft.class_757.method_3192(class_757.java:850) at net.minecraft.class_310.method_1523(class_310.java:1285) at net.minecraft.class_310.method_1514(class_310.java:882) at net.minecraft.client.main.Main.main(Main.java:256) at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:480) at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103) at java.base/java.lang.reflect.Method.invoke(Method.java:580) at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:243) at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:278) at org.multimc.EntryPoint.listen(EntryPoint.java:143) at org.multimc.EntryPoint.main(EntryPoint.java:34)

[RancerRex]

I found out that it also crashes in the end, although it's not an intantaneous crash, it only happened when I got close to the dragon.

[RancerRex]

I also found out, that it may have something to do with the physics mod, I disabled and the crash didn't happen immediately, but after I loaded a fortress it crashed. So I will keep this open, although it might've been because of the physics mod, disabling it did help, but it still crashed.

[therealstrizzi]

happening here as well. instant crash when entering the nether. I'm not running the physics mod, so that can't be it.