Document understanding - from extractor unable to load original document

I am a newbie that working on document understanding after I succeeded the first invoice data extractor, then I tried on other docs rather than invoice or receipt, however, it could be classified document type but once loading “from extractor” it showed “Unable to load original document”

Please, any advise ?

Could you share the document is there any problem with format of the document.

I send to your email. is that ok ?

Here the zip of my work
DocUnderstanding.zip (4.7 MB)