The title says it out.
I have these mods installed in the most recent versions possible:
AutoRegLib-1.3-32.jarBiome_Bundle-1.12.2-v6.1.jar
CTM-MC1.12.2-0.3.3.22.jar (ConnectedTexturesMod)
CraftStudioAPI-universal-1.0.1.95-mc1.12-alpha.jar
DynamicTrees-1.12.2-0.9.5.jar
Electroblob's Wizardry - 4.1.4 - MC 1.12.2.jar
Exotic Birds 1.12.2-2.2.1.jar
FamiliarFauna-1.12.2-1.0.11.jar
Forgelin-1.8.3.jar
GravityGun-1.12.2-7.0.1.jar
InventoryTweaks-1.64+dev.146.jar
JustAFewFish-1.7_for_1.12.jar
Mantle-1.12-1.3.3.55.jar
OpenTerrainGenerator-1.12.2 - v6.jar
Patchouli-1.0-20.jar
Quark-r1.6-177.jar
TConstruct-1.12.2-2.12.0.157.jar
Tesla-1.12.2-1.0.63.jar
aether_ii-1.12.2-0.2.6+build127-universal.jar
animania-1.12.2-1.6.2.jar
armoryexpansion-1.3.3.jar
buildcraft-all-7.99.24.2.jar
cc-tweaked-1.12.2-1.84.0.jar
chickens-6.1.0.jar
conarm-1.12.2-1.2.4.jar (Construct Armory)
extrautils2-1.12-1.9.9.jar
grapplemod-v11.1-1.12.2.jar (Grappling hook)
iChunUtil-1.12.2-7.2.1.jar
iceandfire-1.8.0.jar
industrialcraft-2-2.8.182-ex112.jar
industrialforegoing-1.12.2-1.12.13-237.jar
ironchest-1.12.2-7.0.72.847.jar
jei_1.12.2-4.15.0.287.jar (Just Enough Items)
journeymap-1.12.2-5.5.5.jar
llibrary-1.7.19-1.12.2.jar
millenaire-1.12.2-7.2.1.jar
mowziesmobs-1.5.4.jar
roost-1.12.2-2.0.10.jar
tesla-core-lib-1.12.2-1.0.15.jar
twilightforest-1.12.2-3.9.984-universal.jar
Server log: https://mclo.gs/c3t57Gt