With some regularity I get a red disc icon indicating ‘error’ in the right side pane.
When selecting ‘info’, this is what it says under the ‘error’ tab:
Traceback (most recent call last):
File “picard\album.py”, line 330, in _finalize_loading_track
File “picard\metadata.py”, line 358, in run_track_metadata_processors
File “picard\plugin.py”, line 510, in run
File “C:\Users-\AppData\Local\MusicBrainz\Picard\plugins\standardise_performers.zip\standardise_performers.py”, line 38, in standardise_performers
for key, values in metadata.rawitems():
RuntimeError: dictionary changed size during iteration