Hello,
I would like to share this error message, it was spam every second in my console logs

[11:31:18 INFO]: [Multiverse-Portals-Debug] The PlayerInteractEvent was already cancelled. Doing nothing.

If you have any solution to fix it, I would like :)

I don't know for sure but that looks like a plugin conflict.

Yep, a plugin conflict would make sense. I’d recommend a binary search to find the plugin

If the issue is reproducible with only the latest versions of Multiverse Core, Multiverse Portals and PaperMC installed then please reproduce it on a fresh server, send instructions for doing so alongside full logs in https://mclo.gs