Something is failing in your scenario and you're packaging up the entire response as a file (pdf or docx) because you probably have something like [generated_report].docx as the attachment name.
View the history of your integromat scenario to figure out the error message and resolve that. Once the report is being generated by the report module, use "HTTP GET - Get a file" module to grab the report via the URL, then attach that to your email.
![DerrickWestoby_0-1645046879097.png DerrickWestoby_0-1645046879097.png](https://community.esri.com/t5/image/serverpage/image-id/34164i80B9729202C57935/image-size/medium?v=v2&px=400)
![DerrickWestoby_1-1645046902874.png DerrickWestoby_1-1645046902874.png](https://community.esri.com/t5/image/serverpage/image-id/34165i36D6C50FFEF19677/image-size/medium?v=v2&px=400)