Test this for 1.21.4

[Les23]

Can someone please test this and fix this issue?

WARN [ProtocolLib] Version (MC: 1.21.4) has not yet been tested! Proceed with caution. Thanks,! From here forward, it's recommended you test your plugins so the console knows it's 100% tested and works fine

Right now, nothing has been tested. Every time I restart my server, I get that error. Please test this so the 1.21.4 paper knows you've tested it. Thank you so much!