Raid Farm not Working

I use
Paper version git-Paper-99 (MC: 1.17.1) (Implementing API version 1.17.1-R0.1-SNAPSHOT) (Git: 55d5c16)
and the Raid Farm by RayWorks (https://www.youtube.com/watch?v=TDnppbTrdks) is not working
the raid bossbar yust disapeers after it is fully charged

Pls