This appears to be related to the work to add priorities to load requests to improve responsiveness.

Traceback:

Traceback (most recent call last):
File "./picard/ui/mainwindow.py", line 729, in refresh
self.tagger.refresh(self.selected_objects)
File "./picard/tagger.py", line 534, in refresh
obj.load(priority=True, refresh=True)
TypeError: load() got an unexpected keyword argument 'priority'