Realize h2c GRPC through ingressroute

Traefik Traefik v2
,
1

I want to use ingressroute to implement h2c's GRPC instead of adding configuration.
ingressroute like it. But it responds 500. What should i do, thanks

apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: grpc
spec:
  entryPoints:
    - web
  routes:
    - kind: Rule
      match: PathPrefix(`/Service`)
      services:
        - name: service
          port: 50052
          kind: Service