I am trying to use the Alexa sample app in linux by following the instruction from the Github - "https://github.com/alexa/alexa-avs-sample-app/wiki/Linux#6a---nodejs". But unfortunately i stuck up at the point no. 6a from the instruction in the link. I started the server by the command "npm start" and client service by "mvn exec:exec". A pop up windows has come. I copied the link contains localhost from the window and pasted it to my web browser. Then came the amazon login window. I login successfully then it ask to "click continue to sign in to my app". I click continue option but after that nothing is working and it is not going to next window to generate tokens. In the server command prompt i got the errors like "Failed to post request: getaddrinfo ENOTFOUND api.amazon.com api.amazon.com:443" and few times like "Failed to post request: connect ENETUNREACH 64:ff9b::36ef:1af4:443 - Local (:::0)". I got stuck here. Please help me on this. I am using companionservice for authentication.