This issue has been resolved. A browser tab refresh should ensure these two dialogs are loading as expected.
Posted over 1 year ago. Feb 12, 2018 - 15:11 EST
We are aware of an issue causing some Organizations to be unable to open the Manage Workflow or GitHub Integrations dialog. We've identified the cause of the issue as related to the database migration that was completed yesterday, and are currently working on a fix.