this is the URL for what I am trying to create twitter summary card
when i validate the twitter summary card it says
INFO: Page fetched successfully
INFO: 14 metatags were found
INFO: twitter:card = summary tag found
INFO: Card loaded successfully
but the image does not show in summary card neither at the time of validation nor at the time of tweet.
i added robots.txt with
i am new to this coding thing so please guide me where i am going wrong.