No audio in guest VM

[brexelon]

MacBook Air 2015, Monterey

When connecting to Proxmox VM using virt-viewer, audio does not work even though drivers are installed, and the following errors are displayed in the host terminal.

(remote-viewer:15119): GSpice-WARNING **: 23:12:52.264: Failed to create pipeline: no element "appsrc"

(remote-viewer:15119): GStreamer-CRITICAL **: 23:12:52.264: gst_element_query: assertion 'GST_IS_ELEMENT (element)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.265: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.265: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.275: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.284: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.295: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.311: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.320: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.331: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.340: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.350: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.361: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.371: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.382: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.392: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.403: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.413: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.423: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.433: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.443: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.454: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed

(remote-viewer:15119): GStreamer-App-CRITICAL **: 23:12:52.464: gst_app_src_push_internal: assertion 'GST_IS_APP_SRC (appsrc)' failed