Mod 'Sodium' (sodium) 0.6.3+mc1.21.1 is incompatible with any version before 1.8.1 of mod 'Iris' (iris), but a matching
version is present: 1.8.0-beta.8+mc1.21.1!
Some of your mods are incompatible with the game or each other!
A potential solution has been determined, this may resolve your problem:
Replace mod 'Sodium' (sodium) 0.6.3+mc1.21.1 with any 0.6.x version that is compatible with:
iris 1.8.0-beta.8+mc1.21.1
More details:
Mod 'Sodium' (sodium) 0.6.3+mc1.21.1 is incompatible with any version before 1.8.1 of mod 'Iris' (iris), but a matching
version is present: 1.8.0-beta.8+mc1.21.1!
