Controller doesn't work

Hi, I have assembled Bittle, did the WriteInstinct, and finally uploaded the OpenCat,ino, according to the YouTube video. When I plug the battery onto the board, Bittle did have a move. However, I cannot control Bittle via the controller.

I suspect that the controller doesn't work. I tried the testInfraredRemote.ino file. Within the Serial Monitor, it says "The function decode (&results)) is deprecated and may not work as expected! Just use decode() - without any parameter". When I push any button on the controller, it says "other button 0".