https://www.curseforge.com/minecraft/mc-mods/immersive-portals-mod

https://github.com/Ladysnake/Requiem#mod-interactions

Thank you.

FYI, compatibility with immersive portals has been achieved on 1.14, but 1.15 broke everything again. It will probably come back eventually.

iPortalTeam/ImmersivePortalsMod@f998679#diff-4faa68b0fda7fa604be755936bb003f9
seems like it should soon get a proper fix.