Event source not connecting to sensor

[vaporpin]

Hi,
I have errors in connecting my github event source to the sensor (shown in the argo events ui), following the instructions in
https://argoproj.github.io/argo-events/eventsources/setup/github/

Webhook was created in my github account, however there is error "We couldn’t deliver this payload: failed to connect to host"

My Event Source manifest file is as follow :

apiVersion: argoproj.io/v1alpha1
kind: EventSource
metadata:
name: github
namespace: argo-events
spec:
service:
ports:
- name: example
port: 12000
targetPort: 12000
github:
example:
repositories:
- owner: github-user
names:
- argoevent
webhook:
endpoint: /argoevents
port: "12000"
method: POST
url: http://x.x.x.x.nip.io
events:
- "*"
apiToken:
name: github-access
key: token
insecure: true
active: true
contentType: json

My Ingress manifest :
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: github
namespace: argo-events
annotations:
kubernetes.io/ingress.class: gce
spec:
rules:
- http:
paths:
- path: /*
backend:
serviceName: github-eventsource-svc
servicePort: 12000
host: x.x.x.x.nip.io

In the sensor yaml :
apiVersion: argoproj.io/v1alpha1
kind: Sensor
metadata:
name: webhook
namespace: argo-events
spec:
template:
serviceAccountName: argo-events-sa
dependencies:
- name: test-dep
eventSourceName: webhook
eventName: example
...

Not sure if the ingress is the issue or there are some other issue. Thanks for any help.