myoss opened a new issue #690:
URL: https://github.com/apache/apisix-ingress-controller/issues/690
### Issue description
### Environment
* apisix-ingress-controller version: 1.2.0
* your Kubernetes cluster version: ACK 1.20.4-aliyun.1;
* if you run apisix-ingress-controller in Bare-metal environment, also show
your OS version (`uname -a`): Linux demo 4.19.91-23.al7.x86_64 #1 SMP Tue Mar
23 18:02:34 CST 2021 x86_64 x86_64 x86_64 GNU/Linux
### Minimal test code / Steps to reproduce the issue
1. ACK 1.20.4-aliyun.1
2. create Ingress
```
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-demo
namespace: default
spec:
ingressClassName: apisix
rules:
- host: demo.example.com
http:
paths:
- backend:
service:
name: svc-demo
port:
number: 80
path: /
pathType: Prefix
```
3.
### What's the actual result? (including assertion message & call stack if
applicable)

### What's the expected result?

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