Query error in Grafana for Prometheus

PromQL
1

Hi,

I’m new in Prometheus, can someone advice what is wrong in this query?

sum(counter1) / sum(counter2) * 100 {instance=“SubNetwork=XX-ABC1-XXX-1,ManagedElement=xxx-1”}

Details below:

request:Object
url:“api/datasources/proxy/75/api/v1/query”
method:“POST”
data:Object
query:“sum(counter1) / sum(counter2) * 100 {instance=“SubNetwork=XX-ABC1-XXX-1,ManagedElement=xxx-1”}”
time:1633525041
hideFromInspector:false
response:Object
status:“error”
errorType:“bad_data”
error:"parse error at char 45: could not parse remaining input “{instance=“SubN”…”
message:"parse error at char 45: could not parse remaining input “{instance=“SubN”…”

Thanks