Run event_based_risk/recompute/job.ini and then you will get
# oq export ruptures
File "/home/michele/oq-engine/openquake/calculators/extract.py", line 1378, in extract_rupture_info
mags = dstore[f'source_mags/{rgetter.trt}'][:]
~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/michele/oq-engine/openquake/commonlib/datastore.py", line 522, in __getitem__
raise KeyError('No %r found in %s' % (key, self))
KeyError: "No 'source_mags/*' found in <DataStore /home/michele/oqdata/calc_27153.hdf5 open>"
Run event_based_risk/recompute/job.ini and then you will get
Reported on the mailing list https://groups.google.com/g/openquake-users/c/r3BZdu4oqGE/m/ESb4mGbZAQAJ