Linkerd service profile

linkerd service profile is not able to get statistics. here is the service profile yaml file. what is wrong with the service profile ?

ServiceProfile for webapp.default

apiVersion: linkerd.io/v1alpha2
kind: ServiceProfile
metadata:
name: token-issuance-service.default.svc.cluster.local
namespace: default
spec:
routes:
- name: ‘/issuance’ # This is used as the value for the rt_route label
condition:
method: GET
pathRegex: ‘/issuance’

$ linkerd viz routes svc/token-issuance-service

ROUTE SERVICE SUCCESS RPS LATENCY_P50 LATENCY_P95 LATENCY_P99
/issuance token-issuance-service - - - - -
[DEFAULT] token-issuance-service - - - - -

is there anyone that is familiar with service profile of linkerd?