Ravenous Project - part1 No errors, but get an blank page

Link to the project page is ravenous-part-1

I follow all the instructions listed including the walkthrough video,
There’s no error, but after npm start command, though it compiled successfully,

I got an empty page (except for the favicon).
Does anyone know what’s going on ?

Please post a link to your repository. Likely you have a bug somewhere that is preventing the page from loading.