text format parsing error in line 1: invalid metric name

[jpveritone]

Deployed the docker image in AWS ECS. The PROMETHEUS_SCRAPE_URL is set to "http://10.33.10.133:9090/api/v1/query?query=nsq_depth but log showing error 2019/01/15 20:13:55 reading text format failed: text format parsing error in line 1: invalid metric name Just to check I SSH into my EC2 instance (running my container) and I can run curl http://10.33.10.133:9090/api/v1/query?query=nsq_depth and it works fine.
Please let me know if any clues what might be going on here?