For Minecraft 1.15.2 only.

If you want Forge, you will need forge 31.1.0. Forge 31.1.50 will not work, somehow mining for ores errors out there. You also need a second mod: https://github.com/LXGaming/MixinBootstrap/releases/download/v1.0.2/MixinBootstrap-1.0.2.jar