Error with Get Libraries and no useful information

[codyburleson]

I'm on portal 8.5 with fixpack 9. I can access the webcontenthandler URL by browser and get the following response:

However, when I click the Get Libraries button, I get an error dialog with no information as shown below.

[mburati]

Cody, can you verify whether you set your custom content handler URL in the server settings under the dashboard's "Settings" tab?