Document doesn't have a <title> element
Webflow automatically creates a title for the page when you create a new page and name it. It helps if the title is the same as the main heading on the page too, as when people use assistive technology to go through open tabs the can quickly find the page they are looking for.
Google Lighthouse says
Having a <title> element on every page helps all your users:
- Search engine users rely on the title to determine whether a page is relevant to their search.
- The title also gives users of screen readers and other assistive technologies an overview of the page. The title is the first text that an assistive technology announces.