shakemaps_from_quakeml error on fetching event

There is an xml error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/src/app/shakyground2/shakyground2/workflows.py", line 93, in shakemaps_from_quakeml
    results.earthquake = Earthquake.from_quakeml(event_id)
  File "/usr/src/app/shakyground2/shakyground2/earthquake.py", line 209, in from_quakeml
    event = fetch_quakeml(path)
  File "/usr/src/app/shakyground2/shakyground2/io/import_fdsnws_eq.py", line 182, in fetch_quakeml
    root = ET.fromstring(buf)
  File "/usr/local/lib/python3.8/xml/etree/ElementTree.py", line 1321, in XML
    return parser.close()
xml.etree.ElementTree.ParseError: no element found: line 1, column 0

for the following event:

• gfz2021jwsm

Code to reproduce:

from shakyground2.workflows import shakemaps_from_quakeml
results = shakemaps_from_quakeml("gfz2021jwsm")