your masternode.conf file is not correct. Make sure you have it exactly the way the guide shows you.

IPaddress:port genkey output index
example: MN1 45.123.45.196:55611 gyugb4hjbkjh4hvtjhfbvh4guyh4g4guyg jhbjh4gjh5vjhbnb4jh4jh44jh4b4jhbjb 1