You don’t need the custom server type, see this part of the modded guide:
The part that adds `@java9args.txt` is important, otherwise the server doesn’t start
Preamble
Minecraft is a bit notorious for being difficult to mod, given there’s oodles of different modloaders and versions to work with, there’s edge cases galore.
If you’re new to the Minecraft modding scene and you’d like to know more about each modding platform and how they differ, check out this post here .
0. Create a new Minecraft Java Instance in AMP
Easy as that, press the Create Instance button, then select Minecraft Java Edition from the drop-down. Feel free to use an existing instan…