Title: Undefined array key “client_id”
Last modified: July 29, 2025

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# Undefined array key “client_id”

 *  Resolved [cnxsoft](https://wordpress.org/support/users/cnxsoft/)
 * (@cnxsoft)
 * [10 months, 2 weeks ago](https://wordpress.org/support/topic/undefined-array-key-client_id/)
 * I’ve got a critical error on my website when editing a post:
 * 8 FastCGI sent in stderr: “PHP message: PHP Warning: Undefined array key “client_id”
   in /xxx/wp-content/plugins/gn-publisher/vendor/google/apiclient/src/Google/Client.
   php on line 888; PHP message: PHP Warning: Undefined array key “client_secret”
   in /xxx/wp-content/plugins/gn-publisher/vendor/google/apiclient/src/Google/Client.
   php on line 889; PHP message: PHP Fatal error: Uncaught Error: Call to undefined
   function GuzzleHttp\choose_handler() in /xxxx/wp-content/plugins/gn-publisher/
   vendor/guzzlehttp/guzzle/src/HandlerStack.php:40
 * I suppose it’s because the Google JSON Key field is empty. But I’m not sure what
   to put there, or how to disable Instant Indexing.
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fundefined-array-key-client_id%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Support [Akshay A](https://wordpress.org/support/users/akshaycode1/)
 * (@akshaycode1)
 * [10 months, 2 weeks ago](https://wordpress.org/support/topic/undefined-array-key-client_id/#post-18575385)
 * Hi,
 * Thank you for reaching out to us.
 * We have already raised a [GitHub ticket](https://github.com/ahmedkaludi/gn-publisher/issues/133)
   regarding this concern and it will be addressed in an upcoming update. We kindly
   request your patience in the meantime.
 *  Thread Starter [cnxsoft](https://wordpress.org/support/users/cnxsoft/)
 * (@cnxsoft)
 * [10 months, 2 weeks ago](https://wordpress.org/support/topic/undefined-array-key-client_id/#post-18575653)
 * There’s a conflict with another plugin using Guzzle.
   If I disable XPoster ([https://wordpress.org/plugins/wp-to-twitter/](https://wordpress.org/plugins/wp-to-twitter/)),
   then the error goes away. Not ideal, and it’s just a workaround.
 *  Plugin Support [Akshay A](https://wordpress.org/support/users/akshaycode1/)
 * (@akshaycode1)
 * [10 months, 1 week ago](https://wordpress.org/support/topic/undefined-array-key-client_id/#post-18579306)
 * Hi, Kindly share a short video of the conflict issue so we can check accordingly.
 *  Thread Starter [cnxsoft](https://wordpress.org/support/users/cnxsoft/)
 * (@cnxsoft)
 * [10 months, 1 week ago](https://wordpress.org/support/topic/undefined-array-key-client_id/#post-18579317)
 * [@akshaycode1](https://wordpress.org/support/users/akshaycode1/) There’s no need
   for a video. If I uninstall X-Poster the fatal error in gn-publisher disappears.
   That’s probably due to the plugins using two different version of Guzzle.
 *  Plugin Support [Akshay A](https://wordpress.org/support/users/akshaycode1/)
 * (@akshaycode1)
 * [6 months, 2 weeks ago](https://wordpress.org/support/topic/undefined-array-key-client_id/#post-18728717)
 * Hi, can you please confirm whether you are still facing the same issue?
 *  Thread Starter [cnxsoft](https://wordpress.org/support/users/cnxsoft/)
 * (@cnxsoft)
 * [6 months, 2 weeks ago](https://wordpress.org/support/topic/undefined-array-key-client_id/#post-18728893)
 * I have disabled the other plugin. So it does not happen anymore, but there’s 
   no fix unless something changed. The downside is that my posts are not shared
   on BlueSky anymore.
    -  This reply was modified 6 months, 2 weeks ago by [cnxsoft](https://wordpress.org/support/users/cnxsoft/).

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

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 * 6 replies
 * 2 participants
 * Last reply from: [cnxsoft](https://wordpress.org/support/users/cnxsoft/)
 * Last activity: [6 months, 2 weeks ago](https://wordpress.org/support/topic/undefined-array-key-client_id/#post-18728893)
 * Status: resolved