Getting this errors in latest.log file
latest.log

Interesting log lines:
930: @reDIrect conflict. Skipping immersive_weathering-common.mixins.json:LevelChunkMixin ... already redirected by supplementaries.mixins.json:LevelChunkMixin
932: @ModifyConstant conflict. Skipping repurposed_structures.mixins.json:structures.StructurePoolMixin ... already redirected by yungsapi.mixins.json:IncreaseStructureWeightLimitMixin
933: @ModifyConstant conflict. Skipping integrated_api.mixins.json:structures.StructurePoolMixin ... already redirected by yungsapi.mixins.json:IncreaseStructureWeightLimitMixin

I suppose it's some adding structures and blocks patching issues in different mods. I couldn't find any settings in their .toml files to somehow fix this. Maybe you can give a clue how to fix this

These mixin warnings are normal and should appear even without ModernFix added. Unless they are causing a crash or incorrect game behavior, I don't think there is much I can/need to do from my end.