We have an issue with Card Validator tool. Our app is AngularJs-based and static to crawler is served with PhantomJs server.
Facebook Open Graph debugger works for us just fine, but Twitter Card Validator fails with:
"Fetching the page failed due to an internal error, debugId: 2559285950435-374620"
Url is: http://strollaround-stage-136089290.us-east-1.elb.amazonaws.com/#!/



Replies
I assume you may be having an issue due to the robots.txt file. It does seem like our Twitterbot is able to access your image directory. Please take a look at the link below and if a change to your robots doesn't work, please let us know.
https://dev.twitter.com/docs/cards/troubleshooting#twitterbot
Hi, we are having the same issue and its certainly not a robots.txt issue, we already changed it.
We have migrated to some other hosting provider, and for some reason twitter cards are not working anymore, we get:
Fetching the page failed due to an internal error, debugId: 5657572429548-989412
Please provide an example URL on your domain and I'll look into it further.
My mather is on the behalf of an human error coase of devices unshortcommings.