Known Issue: Twitter Timeline Displays 'Nothing to see here - yet'
Issue
You currently have a ShortPoint Twitter Design Element or a Code Design Element connected to a Twitter Embedded timeline on your page, and you are seeing this status:
Reason
A recent change from Twitter is preventing the Twitter timeline to load when it is embedded on a page. You can see information about this issue by opening the Developer tools from your browser.
Option 1: On your SharePoint page, right click using the mouse and select Inspect.
Option 2: Another way to open Developer tools is to click the (1) browser settings (2) More Tools and select (3) Developer Tools.
A new window will appear. Switch to the Console tab and you will see this message from Twitter below (Sometimes you have to scroll up/down to see this message):
Here are the links from Twitter that you may want to check for further information:
[Update] There have been recent updates to Embedded Twitter Timelines and supported parameters.
•For more information on what has changed, visit: Embedded Timelines Update Parameters Support
•Please submit feedback or report any bugs: Submit Feedbacks or bugs
Unfortunately, there is currently no workaround for this issue, as the fix needs to be provided by Twitter. Using the SharePoint Twitter web part will also display the same message.
However, you have an option to show a different display from Twitter by going to their publishing link: https://publish.twitter.com/#