Describe the bug
Whenever we're rebooting our OP Prison mode, We're sending people back in, and we get the following errors on multiple plugins:

https://pastebin.com/EeD81KeS
https://pastebin.com/u4pWrNV6
https://pastebin.com/9rg4sK4h

To Reproduce
We're just sending people, thats what happends..

Expected behavior
Not get errors about "Temporary Players"?

Screenshots
I've sent the Pastebins Above

Version Info
ProtocolLib v4.5.1, https://pastebin.com/tWy7KZsX

Additional context
Also, possible to add me on discord Shanny#0001

https://pastebin.com/7yWC80SV

Throwing an error in a class that doesn't exist..

Your using an older unsuported version. You should change to version 4.6.0

The spigot pluginsite sais:
If you're running 1.8 through 1.16, use the latest release