After a good night's sleep I've figured out the problem! 
I was posting the document to:
http://localhost:9200/documents/1
Instead of posting to:
http://localhost:9200/documents/document/1
So embarrassing; anyways, thanks! 
After a good night's sleep I've figured out the problem! 
I was posting the document to:
http://localhost:9200/documents/1
Instead of posting to:
http://localhost:9200/documents/document/1
So embarrassing; anyways, thanks! 
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