why browser auto add to link string in end when I insert it in html

I use grapecity pdf viewer

wj-pdf-viewer #pdfViewer 
  [serviceUrl]="'https://test.....azurewebsites.net/'"
  [filePath]="'books/%D7%9B%D7%A4.......pdf'">
</wj-pdf-viewer>

and in network tab I see that it added to result string something https://test....azurewebsites.net/books/%D7%9B%D7%A4%D7%9C-%D7%95%D....pdf/$pdf?_=1571151136434

that is why I got 404 error

How I have to correct set link to pdf? how to avoid auto adding string at the end of link

Thanks!

Solution

The Wijmo's PDF viewer is only compatible with C1WebApi PDF services and from what I understand, you have hosted your PDF document elsewhere. To learn more about C1WebApi, refer to this link.