Exporting PDF dashboard results in error

In the application server, the following error occurs when attempting to export to PDF a Performance Analytics dashboard:

2017-03-20 09:48:59 (041) glide.background.generation.fbdfa93adb29724048fcf5b31d96191a SYSTEM SEVERE *** ERROR *** com.snc.whtp: An error occurred on the server
2017-03-20 09:48:59 (042) glide.background.generation.fbdfa93adb29724048fcf5b31d96191a SYSTEM SEVERE *** ERROR *** Loading pages (1/6)
[> ] 0%
[======> ] 10%
[==============================> ] 50%
[============================================================] 100%
Counting pages (2/6) 
[============================================================] Object 1 of 1
Resolving links (4/6) 
[============================================================] Object 1 of 1
Loading headers and footers (5/6) 
Printing pages (6/6)
[> ] Preparing
[============================================================] Page 1 of 1
Done 
Exit with code 1 due to network error: AuthenticationRequiredError

 

1. Navigate to Performance Analytics > Dashboard.

2. Select a dashboard, for example, the Project Dashboard.

3. Click Export to PDF.

   The following error message is displayed:

   Export failed
   An unexpected error has occurred. Please see the instance logs for more details.

 

For time series widgets, do not enable comments. For the detailed scorecard, generate the PDF through the browser or use screen capture functions.