Error during url validation; check url and try again - publish to aws

Question

I want to deploy .Net website to AWS Elastic Beanstalk. For this:

1. Downloaded AWS Toolkit for Visual Studio
2. In visual studio from solution explorer right click on my project and selected Publish to AWS Elastic Beanstalk.
3. Then I entered credentials for IAM user that I downloaded from credentials.csv file.
4. On next step, I received error on checking availability:

Error during url validation; check url and try again

and if I click next then receive error in popup:

CNAME dealkar-prod is unavailable

What I am doing wrong?

Update:

I'm still trying to figure out whats wrong. This is the link of website that I created on AWS.

Answer 1

Here's a stack question that has some good suggestions to try:

AWS Error: Error during Url validation; check URL and try again