Microsoft Edge users are required to download the pdf files instead of opening automatically in Edge, Edge PDF viewer could be turned on which is currently generating an issue.
Download PDFs in Microsoft Edge
On your computer, open Microsoft Edge.
At the top right, click ... More Settings.
Type PDF in the search field and press enter
Scroll down and Click on PDF documents which should be highlighted
Click the Toggle Switch to turn onAlways open PDF files externally.
Microsoft Edge will now download PDFs automatically when you click them.