I am testing the Enlightlite theme. I created a new local user and assigned it this theme. The user logs in fine and is displayed the dashboard, with the two default categories. When the user clicks on one of the categories, intermittently, they are getting the error in the image below:
if the user refreshes (f5) several times, the entries in the category are correctly displayed as in the screen image below. Note that the URL being used is the same.
If I revert the user's theme to clean, they do not experience the error. I have debugging turned on and no additional messages are displayed. No messages seem to be logged in the server logs. How do I debug this issue as it happens for all of my categories?