Twitter Cards doesn't appear in tweet

[idaleksandrov]

Hello. Can you help me: I can’t post twitter cards from my web-site http://cnsnf.os.drupalcompany.com. All last week my site pass twitter cards validator, but twitter cards doesn’t appear in tweet. Link on twitt https://twitter.com/idaleksandrov/status/672025546881146881 . Today validator return error ERROR: Fetching the page failed because it’s denied by robots.txt. But i doesn’t do anything with it. Please help.

[andypiper]

Your robots.txt file is denying our Cards crawler (Twitterbot) from accessing your site. See the Troubleshooting guide for more help with this.

[idaleksandrov]

Thank you guys for quick reply. The problem is in server configuration that disallow any Robots. I don’t know that.Thanks. for another user: you can check how search robot’s see you robots.txt file just enter http://yoursite.com/robots.txt in browser address field. If your server has any limitation for seo you would see it.

[andypiper]