Title: Thumbnail Problem
Last modified: February 27, 2020

---

# Thumbnail Problem

 *  Resolved [forvideogames](https://wordpress.org/support/users/forvideogames/)
 * (@forvideogames)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/thumbnail-problem-27/)
 * I have been using this plug for a long time.However I have a problem.When I want
   to share my post in Twitter or Whatsapp,thumbnail is not working.Thumbnail is
   working only in Facebook.Card validator in the Twitter says ”Unable to render
   Card preview” and it does not find my metatags.I always add thumbnail for post
   and add thumbnail for Twitter and Facebook in the post.In the seo plugin ”Add
   Twitter card meta data” is active.How can I solve this problem ?
 * My website : [https://www.forvideogames.com](https://www.forvideogames.com)
    -  This topic was modified 6 years, 1 month ago by [forvideogames](https://wordpress.org/support/users/forvideogames/).

Viewing 6 replies - 1 through 6 (of 6 total)

 *  [devnihil](https://wordpress.org/support/users/devnihil/)
 * (@devnihil)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/thumbnail-problem-27/#post-12510399)
 * We checked on your page’s metadata and did confirm that the Yoast SEO plugin 
   is outputting the Twitter metadata correctly ([see image here](https://pasteboard.co/IXDFu1P.png)).
   However, we do see that in the Twitter card validator it is returning a message
   of ‘WARN: No metatags found.’
 * To resolve this we would recommend performing a conflict check to see if another
   plugin or theme is interfering with Twitter’s ability to read the metadata. The
   fastest way to do this is to **deactivate all non-Yoast plugins and switch to
   a standard theme** like [Twenty Nineteen](https://wordpress.org/themes/twentynineteen/)
   and then testing your page in the Card Validator.
 * Also, you can find additional information on issues that affect whether Twitter
   can read the metadata correctly in the following article: [https://developer.twitter.com/en/docs/tweets/optimize-with-cards/guides/troubleshooting-cards](https://developer.twitter.com/en/docs/tweets/optimize-with-cards/guides/troubleshooting-cards)
 *  Thread Starter [forvideogames](https://wordpress.org/support/users/forvideogames/)
 * (@forvideogames)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/thumbnail-problem-27/#post-12512114)
 * A few days ago the Whatsapp problem was solved, but Twitter is still unresolved.
   After that,I disabled all plugins except Yoast SEO and I installed Twenty Nineteen
   theme.However,my problem still continues.
 *  Plugin Support [amboutwe](https://wordpress.org/support/users/amboutwe/)
 * (@amboutwe)
 * [6 years ago](https://wordpress.org/support/topic/thumbnail-problem-27/#post-12519981)
 * In your robots.txt file, you are only allowing Twitter to access the uploads 
   folder on your site. All other pages are disallowed which means Twitter cannot
   see the meta tags on your posts and pages.
 *     ```
       User-agent: Twitterbot
       Disallow: *
       Allow: /wp-content/uploads/*
       ```
   
 * Please update the robots.txt file and allow Twitter access to your site. This
   guide provides more information on how to edit `robots.txt` through Yoast SEO:
   [https://yoast.com/help/how-to-edit-robots-txt-through-yoast-seo/](https://yoast.com/help/how-to-edit-robots-txt-through-yoast-seo/)
 * If the `robots.txt` file is [not writable](https://yoast.com/help/if-your-robots-txt-were-writeable-error)
   or your WordPress install has [disabled file editing](http://codex.wordpress.org/Hardening_WordPress#Disable_File_Editing),
   you will not see the option to edit `robots.txt`. Instead, you can [edit at the server level](https://yoast.com/help/how-to-edit-robots-txt-through-yoast-seo/#server).
 *  Thread Starter [forvideogames](https://wordpress.org/support/users/forvideogames/)
 * (@forvideogames)
 * [6 years ago](https://wordpress.org/support/topic/thumbnail-problem-27/#post-12520037)
 * I changed robot.txt file.After that I changed my theme,so I use Twenty Nineteen
   theme now.Then,I disabled all plugings except Yoast SEO.However,my problem still
   continues.
 * Robot.txt : [https://ibb.co/rF40pG3](https://ibb.co/rF40pG3)
    -  This reply was modified 6 years ago by [forvideogames](https://wordpress.org/support/users/forvideogames/).
    -  This reply was modified 6 years ago by [forvideogames](https://wordpress.org/support/users/forvideogames/).
 *  Plugin Support [amboutwe](https://wordpress.org/support/users/amboutwe/)
 * (@amboutwe)
 * [6 years ago](https://wordpress.org/support/topic/thumbnail-problem-27/#post-12524986)
 * Using a terminal window, I ran the following command a few times
 * `curl --user-agent "Twitterbot" URL`
 * replacing URL with your homepage, a post on your site and a variety of links 
   from other Yoast SEO user’s sites.
 * On your site, there is a huge (~100 lines) of empty space before the html opener
   is seen. For other sites, there are no empty lines.
 * This means something in your setup is causing a delay which means Twitter never
   sees the actual output of the page.
 * Just to be sure, we would like to rule out any plugin or theme conflicts that
   may occur. The fastest way to do this is to **deactivate all non-Yoast plugins
   and switch to a standard theme** like [Twenty Nineteen](https://wordpress.org/themes/twentynineteen/).
 * Test this on your development or staging site, as this requires Twitter being
   able to access your test environment.
 * As we can imagine that you’re unfamiliar with checking for conflicts, we’d like
   to point you to a step-by-step guide that will walk you through the process: 
   [How to check for plugin conflicts](https://kb.yoast.com/kb/how-to-check-for-plugin-conflicts/).
 *  Plugin Support [amboutwe](https://wordpress.org/support/users/amboutwe/)
 * (@amboutwe)
 * [6 years ago](https://wordpress.org/support/topic/thumbnail-problem-27/#post-12553604)
 * This thread has been marked as resolved due to a lack of activity.
 * You’re always welcome to re-open this topic. Please read [this post](https://wordpress.org/support/topic/read-this-before-your-post/)
   before [opening a new request](https://wordpress.org/support/plugin/wordpress-seo#new-post).
 * Thanks for understanding!

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘Thumbnail Problem’ is closed to new replies.

 * ![](https://ps.w.org/wordpress-seo/assets/icon-256x256.gif?rev=3419908)
 * [Yoast SEO - Advanced SEO with real-time guidance and built-in AI](https://wordpress.org/plugins/wordpress-seo/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wordpress-seo/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wordpress-seo/)
 * [Active Topics](https://wordpress.org/support/plugin/wordpress-seo/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wordpress-seo/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wordpress-seo/reviews/)

## Tags

 * [thumbnail](https://wordpress.org/support/topic-tag/thumbnail/)
 * [twitter](https://wordpress.org/support/topic-tag/twitter/)

 * 6 replies
 * 3 participants
 * Last reply from: [amboutwe](https://wordpress.org/support/users/amboutwe/)
 * Last activity: [6 years ago](https://wordpress.org/support/topic/thumbnail-problem-27/#post-12553604)
 * Status: resolved