Google Analytics - Page Title (not set) issue

Hi everyone,

I’m trying to investigate a weird issue where we’re seeing a huge number of traffic being allocated to a page that’s reflecting as ‘(not set)’ in Google Analytics.

All pages are correctly set with a page title, and other traffic is fine and reflecting correctly in GA.

Anyone experienced this before?
We are not using a plugin, but instead Google Analytics installed via Tag Manager.

Here is a screenshot of our GA dashboard: