swhworker@worker0:~$ SWH_CONFIG_FILENAME=/etc/softwareheritage/lister.yml swh lister run --lister cran
Traceback (most recent call last):
  File "/usr/bin/swh", line 11, in <module>
    load_entry_point('swh.core==0.11.0', 'console_scripts', 'swh')()
...
  File "/usr/lib/python3/dist-packages/swh/core/api/__init__.py", line 344, in raise_for_status
    raise exception from None
swh.core.api.RemoteException: <RemoteException 500 TypeError: ["can not serialize 'Attribute' object"]>