Transport Error 400 - Failed to derive xcontent

Hi all,

I'm trying to run a scrapy crawler to feed elasticsearch but I seem to be
getting this error and I can't understand how to begin debugging this.

line 97, in _raise_error HTTP_EXCEPTIONS.get(status_code,
TransportError)(status_code, error_message, additional_info)
elasticsearch.exceptions.RequestError: TransportError(400, u'Failed to
derive xcontent from

Can anyone help me on my way to understand what is going wrong and how I
might start to debug it?

Any help would be appreciated.


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