404 Error in Deployment of MERN App - Cyclic

I am trying to deploy a full stack mern app using cyclic however, when trying to access the url which is https://hilarious-teal-binturong.cyclic.app, I get a 404 error. I have added the environment variables. I have also ran npm run build in the frontend which using vite. I can’t seem to really understand why this is happening. The github link is GitHub - gbopola/product-feedback-app: Full stack product feedback app built with React, Styled Components, Redux, NodeJS, Express and MongoDB.