Athena won't run on MacOS Big Sur 11.2.1

[ben-s-e]

Following the instructions in HACKING.txt, I get the python3 error:

athena % python3 src/main.py
No version.py available
Athena version is 0.4.7.dev2+g98c8769
Athena's output directory will be /var/folders/0n/lghg82jn4bb7pqjs3cbz4ljh0000gn/T/Athenan36jwwso
Traceback (most recent call last):
File "/Users/ben/LOCAL/athena/src/main.py", line 8, in
from athena.mainwindow import AthenaWindow
File "/Users/ben/LOCAL/athena/src/athena/mainwindow.py", line 18, in
from athena import bildparser, viewer, screenshot, geom, ATHENA_DIR, ATHENA_OUTPUT_DIR, ATHENA_SRC_DIR, logwindow, version
File "/Users/ben/LOCAL/athena/src/athena/viewer.py", line 15, in
from athena import ATHENA_SRC_DIR, plymesh, geom, decorations, screenshot
File "/Users/ben/LOCAL/athena/src/athena/decorations.py", line 14, in
class SphereDecorations(Qt3DCore.QEntity):
TypeError: 'Shiboken.ObjectType' object is not iterable

And downloading the latest .zip pre-release, moving the Athena app to /Applications and double clicking, it says:

"Athena is damaged and can't be opened"