Super shows this problem when a page on your site points to a Notion block that is not a page, for example a text block, an image, or a linked database view. Super can only publish Notion pages, so visitors get a 404 at this URL.
Why it happens
- A page was converted to another block type in Notion (for example Turn into → Text).
- The page in Super was added from a link to a block instead of a link to a page.
- A database view or a linked database was added as a page. Super needs the database's own page or one of its items.
How to fix it
- In the Super dashboard, open Pages, click the three dots next to the page and choose View in Notion to see what the URL points to.
- If it should be a page, turn the block back into a page in Notion (Turn into → Page) and click the refresh button in the dashboard preview.
- Otherwise redirect the URL to the right page (Beginner's Guide to Page Redirects) or delete it from your site in Pages (three dots → remove). Your Notion content is not changed.