Sonarqube with alb ingress controller gives 504 time out error

Question

I have deployed sonarqube helmchart in eks https://github.com/SonarSource/helm-chart-sonarqube/tree/master/charts/sonarqube. So in order to access the sonarqube from outside eks cluster, I'm using alb ingress controller instead on nginx ingress controller. I don't understand where does it break. When I call my host, for example "myhost.com", I get 504 time out. Even though the app is running fine inside the pod, I tested it. I don't understand why isn't it forwarding the traffic to server.

My ingress file example

kind: Ingress
metadata:
  name: app-k8s-sonarqube-sonarqube-internal
  annotations:
    # annotations: https://kubernetes-sigs.github.io/aws-load-balancer-controller/v2.3/guide/ingress/annotations/
    kubernetes.io/ingress.class: alb
    alb.ingress.kubernetes.io/scheme: internet-facing
    alb.ingress.kubernetes.io/target-type: ip
    alb.ingress.kubernetes.io/group.name: {{ .Values.sonarqube.ingress.groupname }}
    alb.ingress.kubernetes.io/listen-ports: '[{"HTTPS":443}]'
spec:
  rules:
  - host: {{ .Values.sonarqube.ingress.host_public }}
    http:
      paths:
      - pathType: Prefix
        path: /
        backend:
          service:
            name: app-k8s-sonarqube-sonarqube
            port:
              number: 9000 ```