OAuth Signature


Hi Guys

I actually migrating to v1.1 API to get twitter trending topics nearby, for this I need to get OAuth Signature, which I’m trying to generate one from https://dev.twitter.com/docs/api/1.1/get/trends/place and when I click on “Generate OAuth signature” button, it throws error saying “Please select on of your Twitter Applications”

What am I doing wrong ?

Please help to get OAuth signature.