Mods not loading on Mac OS but working fine on windows

[Captaintacoz101]

I host my own server for me and my friends to play on. It has been working great for a while now but another friend wanted to join but he is on Mac os. I helped him download the forge client on his computer and gave him all the mods that we use, but it never gets out of the loading screen. We are on 1.15.2 and using 59 mods (see below), when JEI is installed the loading screen gets stuck on Atlas stitching for JEI. But when I removed JEI and associated mods from the mod pack it gets stuck on MOD SETUP: Sided setup. I've tried upping the allocated ram but it still doesn't finish loading

Any ideas would be great.

Thanks

 

Mods: 

-Block of Charcoal

-Advanced finders

-Large Ore deposits

-"To the Bat Poles!"

-AI Improvements

-Ambient Sounds 3

-Apple Skins

-Attribute Fix

-Better Than Llamas

-Bookshelf

-Bad wither no cookie

-Chunknogobyebye

-Clumps

-Comforts

-Config 2

-Crafting stations

-Ding

-Double Slabs

-Elevator (openblocks)

-Equipment tool tips

-Fast furnace and Fast workbench

-Fast Leaf decay

-Forge Endertech

-Gravestones

-Harvest

-HWYLA

-JEI

-Jei integration

-Journey Map

-Just enough resources

-Kiwi

-Klee Slabs

-Light overlay

-Lithium

-Mining helmet

-MixinBootstrap

-Modpack config checker

-Morpheus

-Mouse Tweaks

-Natures Compass

-Neat+

-Nether Portal Fix

-No recipe book

-Ore Excavation

-Performant

-Phosphor 

-Placebo

-Random Patches

-Server Tab Info

-SnowRealMagic

-Swing though grass

-Torch Master

-U team core

-Useful Backpacks

-WAWLA

-XarosWorldMap

[Ugdhar]

Please post the debug.log from the computer not working as intended.

[Captaintacoz101]

I got it working, but thanks for the attention.

It looked like the mod compatibility checker was holding things up. Deleted it and now it runs good.