Why is not my code | Minecraft Coding?

I have written a code that saves the UUid of a villager. I want that when you joint that the villager will be removed. It does not work. Why?

Do you have an error code?

Jap is waiting

Just an idea

change the 20th line: "if (UUidvill == lalo) {"

to "if (UUidvill.equals (lalo)) {"

I'll try it out thanks

That will be the problem

[16:14:19 ERROR]: Could not pass event PlayerJoinEvent to Report

What does that mean?

Unfortunately does not work