Summary

When clicking to "Set up wallboard slideshow", it displays the below error.

This below error are on the browser console.

Failed to load resource: the server responded with a status of 404 () - https://<instance>.atlassian.net/ConfigureWallboard!default.jspa?inline=true&decorator=dialog&_=1529687690547

Steps to Reproduce

1. Open an dashboard
2. Click in the "..." and choose to "Set up wallboard slideshow"

Expected Results

Set up the dashboard as wallboard slideshow.

Actual Results

Displays the error mentioned.

Workaround

Set the configuration directly in the URL.
E.g:
plugins/servlet/Wallboard/?dashboardId=10102&dashboardId=10100&cyclePeriod=4000&transitionFx=none&random=false

Or extensions for Google Chrome, for example.
https://chrome.google.com/webstore/detail/revolver-tabs/dlknooajieciikpedpldejhhijacnbda?hl=en