Warning: [react-router] Location "/index.html" did not match any routes warning @ app.js:32087

My UI worked in a folder on my server. I went to move the [login to view URL] file outside of my folder to public_html. Now my Homepage is coming up "BLANK". I am getting this error on chrome inspect. Warning: [react-router] Location "/[login to view URL]" did not match any routes warning @ [login to view URL] I have had people claim they can fix this routing react router issue. And they waste my time. Please apply for this job only if you can move quickly and are an expert. I need an expert in React.JS/Javascript/Node.js/ You have access to FTP. And u must start right away. You will be paid after you finish.