ReactJS app displays whitescreen using Kubernetes Ingress

I am trying to get hands around ingress routing to deploy multiple ReactJS application using one public ip address. Using SpeedyMath app available at with below routing file trying to access this app as displays a white screen. From browser logs what i see is net::ERR_ABORTED 404 (Not Found). I notice index.html getting loaded but errors “Failed to load resource” at line <script type="text/javascript" src="/static/js/bundle.js"></script></body>