Invalid KeyError: 'method'

[nospotfer]

Sometimes when running read_mrz on the back of a document with MRZ this error occours.
I'm happy to share any intermediate step or the ID that caused this if necessary!

Traceback:

mrz = read_mrz(im_bytes, True, pytesseract_config)
 File "/usr/local/lib/python3.8/site-packages/passporteye/mrz/image.py", line 355, in read_mrz
 mrz = p.result
File "/usr/local/lib/python3.8/site-packages/passporteye/mrz/image.py", line 343, in result
return self['mrz_final']
File "/usr/local/lib/python3.8/site-packages/passporteye/util/pipeline.py", line 102, in __getitem__
 self._compute(key)
File "/usr/local/lib/python3.8/site-packages/passporteye/util/pipeline.py", line 111, in _compute
results = self.components[cname](*inputs)
 File "/usr/local/lib/python3.8/site-packages/passporteye/mrz/image.py", line 319, in __call__
new_mrz.aux['method'] = new_mrz.aux['method'] + '\|max_width(%d)' % self.other_max_width
KeyError: 'method'

Context:
in passporteye/mrz/image.py in call at line 319

(...)
        if mrz is None and (__pipeline__['img_binary'].mean() < 0.01 or __pipeline__['img'].mean() > 0.95):
            __pipeline__.replace_component('scaler', Scaler(self.other_max_width))
            new_mrz = __pipeline__['mrz']
            if new_mrz is not None:
----->    new_mrz.aux['method'] = new_mrz.aux['method'] + '|max_width(%d)' % self.other_max_width
            mrz = new_mrz
        return mrz