User blog comment:Otakon7/Otakon7's Buddyfight Simulator/@comment-139.193.11.54-20170515132714/@comment-2234004-20170515164622

It's a bug I'm too lazy to fix lol

What happens is that if more people are online, then the challenge issued by all in the list, but only one of them is the right person, so if you click the wrong one, you get an "empty" opponent and the opponent's field fails to load.

More or less why I suggest people to play against somebody they know (will challenge them).