3rd Mod Version
OptiFine
install path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\launcher
put your mods path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\launcher\mods
Do not install at this path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\
- This path will let 3rd mod installer error
Forge
install path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\launcher
put your mods path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\launcher\mods
Do not install at this path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\
- This path will let 3rd mod installer error
Fabric
install path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\launcher
put your mods path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\launcher\mods
Do not install at this path: C:\Users\{username}\AppData\Roaming\.minecraft-mjolnir\
- This path will let 3rd mod installer error