Songs stopping towards end.

[Lolobearleo]

I have an iPhone 7. I've had no problems the past few weeks but starting a few days ago if I plug my phone in to a speaker systems to play my playlist it'll stop around the end of a song, about 10 seconds remaining. It does it EVERY song. It works fine when just playing off the phone and not plugged in to a system. I pay for premium, and this playlist is work related so it's very unprofessional when it cuts out. PLEASE FIX.