I need help with code.

So... My problem is code. I'm tried to copy and slightly edit guardian's code (Because I'm really want to make mob like guardian in my mod). 

This is error log: https://pastebin.com/yALLya12

This is code of the mob, that i got after editing: https://pastebin.com/zgVt6vVY

This is code of file "testenvironmentmod.java": https://pastebin.com/fsZf18FR

I hope someone can help me).

Sorry for bad english.