Otherwise, it is someone posing as Twitterbot. If you are receiving traffic from Twitterbot that is coming from an IP in these ranges, it is legitimate. You can verify that the traffic coming from a Twitterbot User Agent is legitimate using two different methods: Twitterbot is the User-Agent that Twitter uses when crawling URLs shared on the platform (with version, such as Twitterbot/1.0).

Incorrect configuration may prevent Twitter's web crawler from accessing your site. You should also confirm that other aspects of your site's SSL configuration are correct, using a service such as Qualys SSL Labs. Twitter's web crawler requires the use of TLS v1.1 or greater. My video is not playing properly in the Player Card.My Card information now refreshes, but images are not updating.I updated my site meta tags, but my Tweet shows the old Card.My Tweet shows an outdated version of my Card.My Card does not appear in the timeline.My Tweet is missing the image/video/summary text.The validator cannot reach my testing or staging environment.I get the message, 'ERROR: Fetching the page failed because the response is too large.'.I get the message, 'Invalid card type.'.I get the message, 'Caught Exception in App Proxy Service.'.

I get the message, 'Failed to get a proxied URL for the image.' (or an image is not shown).I get the message, 'ERROR: Fetching the page failed because the request timed out.'.If you are unable to find the solution to an issue here, please use the Twitter Cards category on the developer forums. Use this troubleshooting guide to help to identify and resolve commonly encountered issues during Cards development.

Debug elinks ssl error