Unable to install the modpack.
Try it on two different computers via the curse platform or via the zip (import) or via Prism
. It says "Mod File Integrity Check Failed". With Prism it indicates the 4 mods in problem
-TMEL
-Netherending Ores
-MCTsmelteryIo
-HarderBranchMining

Not practical because we don't see if you release a new version of your modpack

This is happens because owners of this 4 mods forbid to download them by 3d party launcher. This could be fixed in prism by pressing Open Missing button:

Thanks for the info.
I understood and managed to make it work but I think it's a shame that it doesn't do it directly via curse because problematic for many people who won't bother trying to go through prism
. otherwise very good modpack.
When will there be an expert modpack in 1.20?

it doesn't do it directly via curse

It does actually. If you using CurseForge launcher, it downloading all the mods without additional clicks.

expert modpack in 1.20

1.12.2 is best version for expert packs already. Why you need 1.20?