On Gatsby Foundation deleted blog posts appear at the bottom of other posts

Even after deleting the demo blogs posts they do appear at the bottom of other blog posts.
I tried to clear the cache and deployed again but still no change. any solution for this ?

Which site is this about?


It looks like these links are in the site’s build, which means this is not a caching issue. You will have to go through the pages and remove these links another way. You can download and see these pages with https://netlify-file-browser.netlify.app/