Maintenance plugin does not work correctly

[JustRed23]

Basic questions:

• I am actually using ketting, and not any other software (e.g. magma)
• I am using the latest Ketting version at the time of writing for the Minecraft version, that I am using
• I have provided full server logs and not a crash-report
• I have checked all items without reading.
• I have provided proper reproduction steps
• I have ticked all boxes

What Minecraft Version is your Server on?

1.20.1

Full Ketting Version

1.20.1-47.3.6-0.3.25

Description of behavior

MOTD does not change when the maintenance plugin gets activated

Reproduction Steps

Steps to reproduce the behavior:
1. Use above Version with mod bogus with the version x.y.z 
2. Run the server
3. See the mixin error

Logs

.

Additional context

kennytv/Maintenance#136