Minecraft won't work! FIX THIS PLZ!

[mineariacraft135]

I downloaded the latest Forge. Forge 2426 for 1.12 and download optifine. I installed a mod called JustEnoughItems. It worked with optifine. But once I installed another mod but then Minecraft crashed each time. I removed the mod and Minecraft worked fine. I visited the page with FAQ of forge. I did what its said why Minecraft crashed. I installed it again but to still no avail. I tried removing optifine and the other mod. NOTHING WORKED. It seemed that Minecraft won't work with that mod. I installed a different mod. STILL NOTHING. Please fix this bug i really want to install other mods. In 1.11.2 it worked fine and i could install as many mods without a crash. I don't know what to do. Please fix this in the next update. P.S. Im on a macbook pro.

[mineariacraft135]

Ok then. Thanks!