We can’t see the output of your site and know what happened, we need to see the code you are working with. Please review Requesting Help and follow the suggestions there.
There are many common errors when deploying a site. Your config file will need to be correct for your deployed environment (make sure the baseURL is set). Also, if your post didn’t render in public, is draft = true in front matter?
There are other things to check, so please search for common errors such as yours in the forums, or share the templates for your site. 