Spotify suddenly stopped playing sound in car through bluetooth or android auto

[CharlieRo]

Plan

Premium

Country

UK

Device

Samsung Galaxy S9 plus

Operating System

 Android 

My Question or Issue

Yesterday when playing through my car stereo on android auto the sound suddenly stopped.  It now won't play through Bluetooth either.  The app and car stereo shows the track is being played as moves through tracks still but no sound.  App plays fine on phone just not through stereo and car stereo is playing sounds as calls still connect as does radio.  Tried reinstalling spotify on my phone and no change.  Help!