You may have set up a custom HTML section where “Twitter feed” is the section title and 'Tweets by @mrsrowe" is linked text, one component of a Twitter embedded timeline widget.
Your CMS, web browser, or an ad blocking extension may be stripping Twitter’s widgets JavaScript from loading onto your webpage.
Twitter’s widgets JavaScript is located at:
https://platform.twitter.com/widgets.js
View source of a page where you expect the custom HTML element to appear. Search for platform.twitter.com to find an attempt to load Twitter’s widgets JavaScript on your page.
Disable ad blockers on your browser to view the full page without pieces removed by a browser extension.