watchOS 9.4 (20T253) Now playing error when select iPhone

Apple Watch Series 8 running last watchOS 9.4 as of today

If you tap on Now Playing on Apple Watch to manage the music that is playing in the iPhone (3rd party apps, not with  Music), I tap on iPhone and I receive a message saying:

Airplay Could not establish connection on "iPhone". Then you tap on "OK" and you can manage the music that is running in the app in your iPhone: next or previous track, increase or decrease the volume, pause, start...

I think is not a very big problem, but annoying bug, because you receive the message if it takes a while to return make use of Now Playing feature in  watch.

Does anyone else have this problem?

Thanks in advance