Hi Sachin,
Thank you for your update.
We have created the PDF Viewer Client Side Blazor and shared the same in the below link,
As mentioned earlier, If the online web service URL is provided then the document need to be available in that location.(we have only certain documents in our web service project). So, you can please create PDF Viewer web service project locally and place the documents. Also we can load the PDF documents using the upload option and load() API available in PDF Viewer.
Please try it still if you are facing the issue, revert us with the modified sample and the PDF document. These details will be helpful for us to investigate further and assist you better.
Regards,
Akshaya