I made a DELETE request to local Elasticsearch server but get an error. But I can not find what happened. I can not see any error message nor response headers. How can I find it? thanks a lot.
Hi @vladimir.camaj,
You are looking in the correct place - normally this is where you will find response headers.
However, on this occasion there are not any response headers, because there was an error before sending the request. Therefore there was no response to receive 
Your request URL isnโt a valid path - currently it is http:9200
If you change this to the correct root for your URL - perhaps http://localhost:9200 - then Postman will attempt to make the request to this URL, and you will be able to receive the response
Oh thank you. http:9200 