Cannot save or list popups

Expected Behavior When I click on Home > Product settings > Popups I expect to see my popups. When I create a popup on Home > Product settings > Popups > Create and click on the Save button, I expect the popup to be saved and shown under 1. Current Behavior When I click on Home > Product settings > Popups I only see an epmty page or an endlessly spinning loading circle. When I click on Save popup I only see endlessly spinning loading circle in the Save button. Possible Solution Steps to Reproduce I don't know. It worked before I deleted all test data in the Danger Zone on General. And it works on a second product/workspace I created as a test. 2. 3. 4. Context (Environment) I use Chrome and Firefox on Ubuntu Linux.