Getting "Parsing failed" Error for all NRQL queries while posting via HttpURLConnection in Java program

Question

I have written a Java Program to connect to NewRelic Graphql API end point https://api.newrelic.com/graphql and successfully able to connect.

• However getting parsing error for the NRQL query.

  Query is {"query": "SELECT average(duration) FROM Transaction 
  WHERE appName = 'My_Application'"}
  Response Code: 200
  Response Body:
  {"errors":[{"locations":
  [{"column":59,"line":1}],"message":"Parsing failed at `'My_Applic`"}]}
  

I am expecting the output, but getting parsing error