i can't find the duplicate mods and i can't find if the logs tell me either, here's the log: 

https://mclo.gs/dICCnyY

Maybe:

upgradednetherite

upgradednetherite_ultimate

i removed upgradednetherite and upgradednetherite_ultimerite but the issue still persists.

 

Progress with all other mod groups with the same base - like the Create mods or the YUNG mods

Update Forge to 43.3.0+

Newer builds of Forge have improved errors and tell you exactly which jars are duplicates.

thanks guys, i was able to fix the issue.

Which mods were involved? 😮

rubidium and embbedium.