When kong is deployed to Google Cloud Kubernetes , konga does not display the list of services properly

HI: kong version: 0.14.1, konga version: 0.13.0, I use key_auth for certification. After I have created a connection rule, I click ACTIVATE button to show that I can connect to the service normally, But when I click on the list of services, it appears empty. And then I manually accessed this url. curl -X GET https://xxx.xxx.com/api/admin-api/services?apikey=xxxxx, It returns complete service list information. And what I need to say is that our domain name was created through ingress-gcp.
So I want to ask next, what do I need to do?