Critical error for /tx/history

Copy/paste of the error:

    Task exception was never retrieved
future: <Task finished coro=<TxHistory._refresh() done, defined at sakia\core\txhistory.py:245> exception=MalformedDocumentError('Could not parse field Issuer',)>

    ----
    Traceback (most recent call last):

  File "site-packages\duniterpy\documents\document.py", line 36, in parse_field

AttributeError: 'NoneType' object has no attribute 'group'


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

  File "asyncio\tasks.py", line 239, in _step

  File "sakia\core\txhistory.py", line 288, in _refresh

  File "site-packages\duniterpy\documents\block.py", line 258, in from_signed_raw

  File "site-packages\duniterpy\documents\document.py", line 38, in parse_field

duniterpy.documents.document.MalformedDocumentError: Could not parse field Issuer