Shaders fail to load on any update after 1.8.0-beta.4

[BronsonCarder]

What happened?

I'm using the Hysteria Shaders in a very large modpack, and for every update you've released since 1.8.0-beta.4, the shaders will fail to load on startup. When I press the shader toggle key it then says "shaders disabled." I press the shader toggle key again, and sometimes it will load the shaders and be fine for the rest of that play session. It is, as far as I can tell, completely stable on 1.8.0-beta.4.

It has a button to "copy info." Here is that information:
Shader program linking failed, see log for details

And the major thing that stands out in the log is this line, repeated over and over and over again:
[08:54:11] [Render thread/INFO]: OpenGL debug message: id=1282, source=API, type=ERROR, severity=HIGH, message='GL_INVALID_OPERATION error generated. object is not successfully linked, or is not a program object.'

I will provide the whole log, but it's over 22,000 lines, most of it being that.

The best way to reproduce this would be to simply download my modpack BottomlessThought's Realism, and update Sodium and Iris (you shouldn't need to mess with any of the extras, I usually recommend people add on a few extra patrix things and physics mod pro, but the error occurs without these).
Most likely culprits include Distant Horizons, No Cubes, the Physics Mod, and the Patrix ResourcePack.

Screenshots

No response

Log output

latest.log

Minecraft Version

Minecraft 1.21.1

Iris Version

1.8.1

Operating System

Windows 10

What is your GPU?

Nvidia RTX 2060 Super

Additional context

[08:54:11] [Render thread/INFO]: OpenGL debug message: id=1282, source=API, type=ERROR, severity=HIGH, message='GL_INVALID_OPERATION error generated. <program> object is not successfully linked, or is not a program object.'