File "/usr/src/BiscuIT-ng/apps/official/BiscuIT-App-SchILD-NRW/biscuit/apps/schild_nrw/util.py", line 88, in <lambda> csv_converters = {'phone_number': lambda v: phonenumbers.parse(v, 'DE') if v else '', File "/srv/biscuit/lib/python3.7/site-packages/phonenumbers/phonenumberutil.py", line 2808, in parse "The string supplied did not seem to be a phone number.")phonenumbers.phonenumberutil.NumberParseException: (1) The string supplied did not seem to be a phone number.