bluetooth sink: ERROR:dbus.connection.Exception

[marcelgsteiger]

My raudio system operates on Pi 4 w/hifiberry-dacplusadcpro now quite a while, software always kept current and now on version 20231020.

For the first time, Im trying to get bluetooth sink to work. Pairing works ok, I then clear the playlist and try to receive audio. However, I get no sound, journalct. -f shows the error:
in the following journal context:

Oct 20 15:48:51 rAudio-atelier sudo[4282]:     http : PWD=/srv/http ; USER=root ; COMMAND=/srv/http/bash/status.sh
Oct 20 15:48:51 rAudio-atelier sudo[4282]: pam_unix(sudo:session): session opened for user root(uid=0) by (uid=33)
Oct 20 15:48:51 rAudio-atelier sudo[4269]: pam_unix(sudo:session): session closed for user root
Oct 20 15:48:51 rAudio-atelier sudo[4282]: pam_unix(sudo:session): session closed for user root
Oct 20 15:48:59 rAudio-atelier bluealsa[538]: bluealsa: [538] D: bluez.c:1407: Signal: org.freedesktop.DBus.Properties.PropertiesChanged(): org.bluez.MediaTransport1: State
Oct 20 15:48:59 rAudio-atelier bluealsa[538]: bluealsa: [538] D: ba-transport.c:741: New A2DP transport: 14
Oct 20 15:48:59 rAudio-atelier bluealsa[538]: bluealsa: [538] D: ba-transport.c:742: A2DP socket MTU: 14: R:672 W:1008
Oct 20 15:48:59 rAudio-atelier bluealsa[538]: bluealsa: [538] D: bluez.c:1407: Signal: org.freedesktop.DBus.Properties.PropertiesChanged(): org.bluez.MediaTransport1: State
Oct 20 15:48:59 rAudio-atelier bluealsa[538]: bluealsa: [538] D: ba-transport.c:1528: Starting transport: A2DP Sink (SBC)
Oct 20 15:48:59 rAudio-atelier bluealsa[538]: bluealsa: [538] D: ba-transport.c:448: Created BT socket duplicate: [14]: 17
Oct 20 15:48:59 rAudio-atelier bluealsa[538]: bluealsa: [538] D: ba-transport.c:1949: Created new IO thread [ba-a2dp-sbc]: A2DP Sink (SBC)
Oct 20 15:48:59 rAudio-atelier bluealsa[538]: bluealsa: [4386] D: a2dp-sbc.c:363: IO loop: START: a2dp_sbc_dec_thread: A2DP Sink (SBC)
Oct 20 15:49:00 rAudio-atelier bluealsa[538]: bluealsa: [4386] D: codec-sbc.c:262: SBC setup: 44100 Hz JointStereo allocation=SNR blocks=16 sub-bands=8 bit-pool=53 => 327993 bps

Oct 20 15:49:00 rAudio-atelier bluealsa-dbus.py[536]: ERROR:dbus.connection:Exception in handler for D-Bus signal:

Oct 20 15:49:00 rAudio-atelier bluealsa-dbus.py[536]:   File "/usr/lib/python3.11/site-packages/dbus/connection.py", line 218, in maybe_handle_message
Oct 20 15:49:00 rAudio-atelier bluealsa-dbus.py[536]:     self._handler(*args, **kwargs)
Oct 20 15:49:00 rAudio-atelier bluealsa-dbus.py[536]:   File "/srv/http/bash/bluealsa-dbus.py", line 35, in property_changed
Oct 20 15:49:00 rAudio-atelier bluealsa-dbus.py[536]:     f.write( 'bluetooth' )
Oct 20 15:49:00 rAudio-atelier bluealsa-dbus.py[536]: ValueError: I/O operation on closed file.
Oct 20 15:49:04 rAudio-atelier bluealsa-aplay[292]: aplay.c:664: Opening ALSA playback PCM: name=default channels=2 rate=44100
Oct 20 15:49:04 rAudio-atelier bluealsa-aplay[292]: aplay.c:668: Couldn't open ALSA playback PCM: Open PCM: Device or resource busy

Any ideas?

Thanks and best regards
Marcel