Crashing when using unstable

Hi i need to run MC 1.20.1 and would like to be able to use DH 2.1.a witch requires at least iris 1.7.5
when using the unstable test version this is the logs im getting

Loader: Fabric
game version: 1.20.1
Iris: unstable iris-fabric-1.20.1-1.8.0-snapshot+mc1.20.1-local
Sodium: sodium-fabric-0.6.0-alpha.3+mc1.20.1
Crash logs
https://mclo.gs/Mu8XgWE
Latest logs
https://mclo.gs/R4GJvgg

mclo.gs