Path routing for file extension in EKS AWS ALB Ingress Controller (AWS Load Balancer Controller controller)

I have created an EKS using AWS ALB Ingress Controller and also created a ingress for the same. But after creating the ingress, I am getting 404 while accessing some file extension. Ex: main.css. Following is my ingress code.

--- 
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata: 
  annotations: 
    alb.ingress.kubernetes.io/scheme: internet-facing
    alb.ingress.kubernetes.io/target-type: instance
    kubernetes.io/ingress.class: alb
  name: my-site
  namespace: my-site
spec: 
  rules: 
    - 
      host: my-site.com
      http: 
        paths: 
          - 
            backend: 
              service: 
                name: my-site-front-end-service
                port: 
                  number: 80
            path: /
            pathType: Exact
          - 
            backend: 
              service: 
                name: my-site-backend-service
                port: 
                  number: 3000
            path: /marketing/
            pathType: Prefix

My frontend application needs to be available on HTTP://my-site.com and the backend service in the URL HTTP://my-site.com/marketing/.But now I am getting 404 for some of the .css files. The URL for the files are like, HTTP://my-site.com/main.css , HTTP://my-site.com//main-5a17625f9c68d9c60c4c.js . What is wrong with my ingress configuration?

When I update the path type to prefix in the frotend-service section, all the calls will be forwarded to frontend hence the calls to the backend service don't work.