num2words(1802, lang='am') --> cannot unpack non-iterable NoneType object

[gregory-marton]

num2words(1802, lang='am')

[/usr/local/lib/python3.11/dist-packages/num2words/__init__.py](https://localhost:8080/#) in num2words(number, ordinal, lang, to, **kwargs)
    109         raise NotImplementedError()
    110 
--> 111     return getattr(converter, 'to_{}'.format(to))(number, **kwargs)

[/usr/local/lib/python3.11/dist-packages/num2words/lang_AM.py](https://localhost:8080/#) in to_cardinal(self, value)
     85         else:
     86             val = self.splitnum(value)
---> 87             words, num = self.clean(val)
     88             return self.title(out + words)
     89 

TypeError: cannot unpack non-iterable NoneType object

[cmartinez32]

This issue appears to be solved by PR #598, which currently remains open. That PR addresses the underlying bug in the merge() method for Amharic, which can end up returning a NoneType object under certain conditions, which is directly related to this issue. Might be worth reviving or reviewing that PR to resolve this.