I have the following website which is a React built site. I have an nginx load-balance site with two backend servers. The individual servers work perfectly but when behind the load-balancers the site rarely load and looking at the browser dev tools there are a ton of 404 Not Found errors:

https://junoscan.skynetexplorers.com

I don't understand why the sites does not load. Sometimes a browser will start working properly. For example, currently Brave Browser does not work on my desktop but started working on my cell phone. What is happening? How do I fix this behavior?