Observe Service Mesh Traffic synctax error

kubernetes version:
v1.23.9 bootstrap through kubeadm

consul version:
Deployed through helm and enabled ui、metrics、api gateway

Demo APP:
hashicorp application:GitHub - hashicorp-education/learn-consul-get-started-kubernetes
Enabled service-mesh sidecar

When I access the HashiCups UI through the API Gateway generating some traffic so that I will have some metrics to look at in the Consul UI and Grafana. there is some errors as follow:

1、envoy logs:

2、prometheus targets syntax errors:

3、consul ui:

4、grafana dashboard: