There's a potential conflict with the new 'running in the background' notification - I've seen the Gmail notification crash the music player notification bar once.
I cleared the cache of the Camera app (to resolve panorama mode not working) and cleared the cache of the Battery protection app (to resolve some erratic battery drain) - and haven't had any Google Play Music crashes since.
Battery Protection is a system app, so:
Settings > Apps & notifications > App info > Menu dots > Show system > Battery protection > Storage > Clear cache.
It's not exact science, but maybe worth a try before a hard reset?
Some problem with nokia 6 after oreo update. It seems that we have to wait for some upgrade or is there any solution?