While attempting to launch with just this mod, the game quickly crashes.
Testing on a fresh curseforge profile with only this mod installed plus cloth config dependency.

crash log:
crash-2022-07-23_20.21.18-client.txt

Versions:
minecraft 1.16.5
forge 36.2.34 (recommended release for 1.16.5)
inventorypause v0.8
cloth-config-4.14.64

Thanks for submitting this issue, I fixed it and a new version should be out soon!

New versions released!
https://www.curseforge.com/minecraft/mc-mods/inventory-pause-forge/files/3911474 (might still be processing)
https://modrinth.com/mod/inventory-pause-forge/version/0.8.1

Thank you! This sure enough did resolve the issue loading this mod by itself. I had further issues when trying to combine with compatible mods (mekanism) but I've detailed that in a separate ticket.