InvokeHTTP errors Name or Service not known

[#1]

I am trying to get census data from census.gov API's, and when I do a GET request using the configured url, I get Name or Service not known error. I am placing the zip code from previous updateAttribute processor in the url. Also, when I just do the same url in postman, I see the response in JSON, but it doesnt work in NIFI. Please help.

[#2]

@Shu, Can you please post your invokeHTTP properties as well. I am using $ symbol only and not & as I have said before. It is a copy paste problem and I want to see other properties of InvokeHTTP that you have used.