The title says all thing. How do I fix this?
Log file: https://gist.github.com/anonymous/697d584bd93793686c4c65f532dfc4d2
How much RAM do you have allocated for the modpack. For such heavy modpacks you should assign at least 6GB of ram to run. If this is not the case, do you have any crash logs?
Proud creator of Ultimate Compression: https://minecraft.curseforge.com/projects/ultimate-compression?gameCategorySlug=mc-mods&projectID=304462