"Assign scale value to all photos" in the "Set scale" window causes a crash.

0. Run in debug mode.
1. Open p39.zip
2. Click the "Set scale" thumbnail button of the "a" photo. (The "a.png - Set scale" window will open, and the label will read "Scale: not set". However, this happens even if the scale of the photo is defined and/or a reference line is drawn in this window.)
3. Click "Assign scale value to all photos". Program crashes:

Traceback (most recent call last):
  File "D:\work\arthropods\arthropoddescriber2repository\arthropod_describer_py\maphis\common\scale_setting_widget.py", line 303, in _set_global_resolution
    self.accepted.emit()
TypeError: accepted(QVariantList) needs 1 argument(s), 0 given!

Process finished with exit code 1