Type of bug

Other unexpected behaviour

/ess dump all output

https://essentialsx.net/dump.html?id=cf119eee37bb4e409c2f455ec6ae60b2

Error log (if applicable)

https://paste.helpch.at/ezeguqugek.md

Bug description

at bootup I get above message in logs

Steps to reproduce

This server is running on Java8
I have stopped server, deleted these folders and file
userdata
usermap.csv

and at start of server no one joining I get the warn in logs

Expected behaviour

not to see players with two UUID's

Actual behaviour

sees players with two UUID's upon login

#4581 will resolve this