Jammming React Project - Can't publish on github pages

So I could really do with some help… I’ve been at this for hours and cannot get it to work! As part of the full stack development career path I created the Jamming Create-react-app Project. You can see it here. However no matter what I do I cannot create the github pages to show it live. All I get when I do is the readme. I’ve followed everything I can find online to no avail! Please help.

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