[Bug]: Potion effects cannot be added

[ZEROkvg]

/mv version -p output

https://paste.gg/72ded729af9a4ae7a44c5333d6e6dc94

Server logs

no logs

Server Version

1.21

Bug Description

Potion effects cannot be added，whether it's using beacons or eating golden apples

Steps to reproduce

1.eating golden apples 2.effects cannot be added

Agreements

• [X] I have searched for and ensured there isn't already an open or resolved issue(s) regarding this.
• [X] I was able to reproduce my issue on a freshly setup and up-to-date server with the latest version of Multiverse plugins with no other plugins and with no kinds of other server or client mods.