Pressing cue but sound is still comming out of laptop as well as headphones

Hello everyone,

I am having an issue since today why I am not able to solve. If I only want to listen to a song with my headphones I always pressed the cue button on my DDJ 400 so I can only listen to the song on my headphones, no matter where the cross and volume fader are. Since today when I press the cue button, the music still comes out of my laptop and not just out of my headphones as earlier. I have no idea how to solve this problem so I appreciate any kind of help. I also attached my output settings.