When running MB Picard (currently 2.0.3) on MacOS High Sierra, Picard loses network connectivity after waking up from sleeping. I believe it’s a problem with static network configuration whereas it can be dynamic.
I’d suggest adding some basic network management functionality that allows to restart / re-initialize the network information in Picard.
Can you provide the full debug log (as a link) ?
Is there any message showing up related to QNetwork ?
It is likely a Qt issue, perhaps https://bugreports.qt.io/browse/QTBUG-55180
Here’s the relevant bit of the debug log (Picard 2.0.4):
D: 09:59:18,912 webservice.ratecontrol.decrement_requests:142: ('musicbrainz.org', 443): Decrementing requests to: 0
E: 09:59:18,913 webservice._handle_reply:372: Network request error for https://musicbrainz.org:443/ws/2/release/814c5ada-d2e6-4627-965e-9e3c386692d1?inc=release-groups+media+recordings+artist-credits+artists+aliases+labels+isrcs+collections+artist-rels+release-rels+url-rels+recording-rels+work-rels+recording-level-rels+work-level-rels: Network access is disabled. (QT code 99, HTTP code 0)
E: 09:59:18,916 album.error_append:200: Network access is disabled.
D: 09:59:18,919 webservice.ratecontrol._out_of_backoff:225: ('musicbrainz.org', 443): oobackoff; delay: 1000ms -> 1000ms; slow start; window size 10.000 -> 11.000
When I try to reload the album, I again get a similar error message:
D: 10:01:39,683 ui.mainwindow.set_statusbar_message:283: Loading album 814c5ada-d2e6-4627-965e-9e3c386692d1 ...
D: 10:01:39,692 webservice.ratecontrol.get_delay_to_next_request:114: ('musicbrainz.org', 443): Last request was 140914 ms ago, starting another one
D: 10:01:39,694 webservice.ratecontrol.increment_requests:134: ('musicbrainz.org', 443): Incrementing requests to: 1
D: 10:01:39,723 webservice.ratecontrol.decrement_requests:142: ('musicbrainz.org', 443): Decrementing requests to: 0
E: 10:01:39,724 webservice._handle_reply:372: Network request error for https://musicbrainz.org:443/ws/2/release/814c5ada-d2e6-4627-965e-9e3c386692d1?inc=release-groups+media+recordings+artist-credits+artists+aliases+labels+isrcs+collections+artist-rels+release-rels+url-rels+recording-rels+work-rels+recording-level-rels+work-level-rels: Network access is disabled. (QT code 99, HTTP code 0)
E: 10:01:39,726 album.error_append:200: Network access is disabled.
D: 10:01:39,727 webservice.ratecontrol._out_of_backoff:225: ('musicbrainz.org', 443): oobackoff; delay: 1000ms -> 1000ms; slow start; window size 11.000 -> 12.000
So there’s apparently no way of reloading an album once it gave an error.