I started building a large modpack on Twitch so I was expecting this crash. The only mod I see mentioned in the stack trace is this one.

Paste: https://pastebin.com/Hhihf3vn

Edit: I watched the red bar during pre-init and it crashed as soon as I saw Modular Diversity

Issue lies with Modular Diversity not being updated to support changes in Modular Machinery from release 1.11 onwards.

If MD is required for your pack, you'll need to downgrade MM to one of the 1.10 releases.

I just looked at the Github for Diversity and I guess it's a known issue. Thank you.