Iris crashes Minecraft when loading any shaderpack on any world

Minecraft 1.21; Iris 1.7.1; Sodium 0.5.9; Windows 10; JRE 21.0.3+9 LTS.

My GPU is the AMD Radeon HD 7470, OEM.

Crash report indicates an error in atio6axx.dll, which is a driver file; I'm unsure whether the issue is with my driver, or if it's an Iris-dependent issue. I am on the last supported driver update for this card (15.301.1901-160226a-318062E), so if it's the driver then I'm SOL. Any thoughts?

Trimmed crash report file is attached below.
Solution
Lovely—it works perfectly! FPS is radically low, but that can be fixed with some adjustments! For future visitors, here's the link to the mod: https://modrinth.com/mod/forcegl20
Modrinth
Forces the game to use OpenGL 2.0!
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