Json Error for dashboard 409

Hi,
I am trying to configure the Dashboard 409 for SQL Server but i am getting error when i select the instance and not providing any data.

Json:
SELECT mean(“Percent_Processor_Time”) FROM “sql_cpu” WHERE (“host” =~ /^SInstancename$/) AND time >= now() - 1h GROUP BY time(30s) fill(null)"

data is present in Influxdb for this query but Grafana is not displaying the data.