[~/mail/account.patricktotzke.gmail.com] ~/projects/gmailieer/gmi sync                                                    
receiving metadata:   0%|                                                                                               | 0/9 [00:00<?, ?it/s]reducing batch request size to: 25
reducing batch request size to: 12
reducing batch request size to: 6
Traceback (most recent call last):
  File "/home/pazz/projects/gmailieer/lieer/remote.py", line 282, in get_messages
    batch.execute (http = self.http)
  File "/usr/lib/python3/dist-packages/oauth2client/_helpers.py", line 133, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/googleapiclient/http.py", line 1451, in execute
    self._callback(request_id, response, exception)
  File "/home/pazz/projects/gmailieer/lieer/remote.py", line 258, in _cb
    raise Remote.BatchException(excep)
lieer.remote.BatchException: <HttpError 400 when requesting https://www.googleapis.com/gmail/v1/users/patricktotzke%40gmail.com/messages/1511291035.M158427P31771Q1.piu?format=minimal&alt=json returned "Invalid id value">

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/pazz/projects/gmailieer/gmi", line 8, in <module>
    g.main ()
  File "/home/pazz/projects/gmailieer/lieer/gmailieer.py", line 143, in main
    args.func (args)
  File "/home/pazz/projects/gmailieer/lieer/gmailieer.py", line 193, in sync
    self.push (args, True)
  File "/home/pazz/projects/gmailieer/lieer/gmailieer.py", line 238, in push
    self.remote.get_messages (gids, _got_msg, 'minimal')
  File "/home/pazz/projects/gmailieer/lieer/remote.py", line 109, in func_wrap
    return func (self, *args, **kwargs)
  File "/home/pazz/projects/gmailieer/lieer/remote.py", line 305, in get_messages
    raise Remote.BatchException ("cannot reduce request any further")
lieer.remote.BatchException: cannot reduce request any further
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