Unable to render Card preview


Description of issue:
I have until recently been tweeting links to my site without problems. In the last few days, whenever I tweet there is no card shown.

Using the Twitter Card Validator I get the following:

Unable to render Card preview

INFO: Page fetched successfully
INFO: 2 metatags were found
ERROR: No card found (Card error)

URL affected (must be public):

Troubleshooting steps attempted [note that we will not prioritise posts unless there is evidence of following the troubleshooting guides]:
I have checked that the twitter tags are showing in the part of the source code.
I have checked the settings on Yoast, and also deactivated it and tried alternative Twitter Card plugins, including the official Twitter one.
I have tried changing robots.txt to allow Twitterbot.
None of these have made a difference.
Unfortunately, some of the other troubleshooting tips are a bit beyond my level of understanding. Any help is appreciated.


I’m having the exact same problem and no luck. I’ve run a twitterbot curl on yours and mine. HTTP/1.1 200 OK

I will let you know if I figure anything out, using YOAST as well, but I don’t think that is the problem.

user@debian:~$ curl -v -A Twitterbot http://stateofnatureblog.com/
*   Trying
* Connected to stateofnatureblog.com ( port 80 (#0)
> GET / HTTP/1.1
> Host: stateofnatureblog.com
> User-Agent: Twitterbot
> Accept: */*
< HTTP/1.1 200 OK
< X-Powered-By: PHP/5.6.34
< Content-Type: text/html; charset=UTF-8
< Link: <http://stateofnatureblog.com/wp-json/>; rel="https://api.w.org/"
< Link: <https://wp.me/98Wki>; rel=shortlink
< Transfer-Encoding: chunked
< Date: Sat, 10 Mar 2018 20:38:19 GMT
< Accept-Ranges: bytes
< Server: LiteSpeed
< Connection: Keep-Alive
<!DOCTYPE html>

<!--[if IE 8]>
<html id="ie8" lang="en-GB" prefix="og: http://ogp.me/ns#">
<!--[if !(IE 8) ]><!-->
<html lang="en-GB" prefix="og: http://ogp.me/ns#">
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />
<link rel="profile" href="http://gmpg.org/xfn/11" />
<link rel="pingback" href="http://stateofnatureblog.com/xmlrpc.php" />
<title>state of nature - conversations on social and political theory</title>

<!-- This site is optimized with the Yoast SEO plugin v7.0.2 - https://yoast.com/wordpress/plugins/seo/ -->
<meta name="description" content="conversations on social and political theory"/>
<link rel="canonical" href="http://stateofnatureblog.com/" />
<link rel="next" href="http://stateofnatureblog.com/page/2/" />
<meta property="og:locale" content="en_GB" />
<meta property="og:type" content="website" />
<meta property="og:title" content="state of nature - conversations on social and political theory" />
<meta property="og:description" content="conversations on social and political theory" />
<meta property="og:url" content="http://stateofnatureblog.com/" />
<meta property="og:site_name" content="state of nature" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:description" content="conversations on social and political theory" />
<meta name="twitter:title" content="state of nature - conversations on social and political theory" />
<meta name="twitter:site" content="@statenature" />
<script type='application/ld+json'>{"@context":"https:\/\/schema.org","@type":"WebSite","@id":"#website","url":"http:\/\/stateofnatureblog.com\/","name":"state of nature","potentialAction":{"@type":"SearchAction","target":"http:\/\/stateofnatureblog.com\/?s={search_term_string}","query-input":"required name=search_term_string"}}</script>
<script type='application/ld+json'>{"@context":"https:\/\/schema.org","@type":"Person","url":"http:\/\/stateofnatureblog.com\/","sameAs":["https:\/\/www.facebook.com\/State-of-Nature-165994683470910\/","https:\/\/twitter.com\/statenature"],"@id":"#person","name":"Cihan Aksan & Jon Bailes"}</script>
<!-- / Yoast SEO plugin. -->


I think in your case is caused by the robots.txt file if you site.
see here: http://stateofnatureblog.com/robots.txt:

#Begin Attracta SEO Tools Sitemap. Do not remove
sitemap: http://cdn.attracta.com/sitemap/5282755.xml.gz
#End Attracta SEO Tools Sitemap. Do not remove

I would try adding:

User-agent: Twitterbot


Well, today it’s just started working again, without me doing anything.

Hopefully whatever it was doesn’t happen again.

Thanks anyway for the replies.


Yeah, started working again for me too. Think it was a twitterbot issue. :face_with_raised_eyebrow:


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