Title: Plugin Conflict Fatal Error
Last modified: June 6, 2022

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# Plugin Conflict Fatal Error

 *  Resolved [OC WordPress Web Designer](https://wordpress.org/support/users/oc-wordpress-web-designer/)
 * (@oc-wordpress-web-designer)
 * [4 years ago](https://wordpress.org/support/topic/plugin-conflict-fatal-error/)
 * I was getting a fatal error an figured out its when my booking system plugin (
   Latepoint: [https://codecanyon.net/item/latepoint-appointment-booking-reservation-plugin-for-wordpress/22792692](https://codecanyon.net/item/latepoint-appointment-booking-reservation-plugin-for-wordpress/22792692))
   is also active. I attached the error log. Is there a way to fix this?
 * [06-Jun-2022 22:33:30 UTC] PHP Fatal error: Uncaught Error: Call to undefined
   function GuzzleHttp\choose_handler() in /home/customer/www/staging4.floridafunctionalmedicine.
   com/public_html/wp-content/plugins/fast-indexing-api/vendor/guzzlehttp/guzzle/
   src/HandlerStack.php:42
    Stack trace: #0 /home/customer/www/staging4.floridafunctionalmedicine.
   com/public_html/wp-content/plugins/fast-indexing-api/vendor/guzzlehttp/guzzle/
   src/Client.php(65): GuzzleHttp\HandlerStack::create() #1 /home/customer/www/staging4.
   floridafunctionalmedicine.com/public_html/wp-content/plugins/fast-indexing-api/
   vendor/google/apiclient/src/Client.php(1190): GuzzleHttp\Client->__construct(
   Array) #2 /home/customer/www/staging4.floridafunctionalmedicine.com/public_html/
   wp-content/plugins/fast-indexing-api/vendor/google/apiclient/src/Client.php(1143):
   Google\Client->createDefaultHttpClient() #3 /home/customer/www/staging4.floridafunctionalmedicine.
   com/public_html/wp-content/plugins/fast-indexing-api/vendor/google/apiclient/
   src/Client.php(411): Google\Client->getHttpClient() #4 /home/custom in /home/
   customer/www/staging4.floridafunctionalmedicine.com/public_html/wp-content/plugins/
   fast-indexing-api/vendor/guzzlehttp/guzzle/src/HandlerStack.php on line 42
    -  This topic was modified 4 years ago by [OC WordPress Web Designer](https://wordpress.org/support/users/oc-wordpress-web-designer/).

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [maarten00](https://wordpress.org/support/users/maarten00/)
 * (@maarten00)
 * [3 years, 11 months ago](https://wordpress.org/support/topic/plugin-conflict-fatal-error/#post-15748965)
 * I’m also running into this problem. The issue here is that the plugin that I’m
   developing is using Guzzle 7. The Instant Indexing is also using Guzzle features
   and somehow it decides to call the function from the Guzzle install in the vendor
   folder of my plugin instead of the Guzzle that is used by this plugin. The trouble
   is that my plugin is using the Google API client so there is no real way for 
   me to fix this error. The only solution is disabling either plugin or for this
   plugin to update to Guzzle 7. That would be great.
 * Same problem here: [https://wordpress.org/support/topic/guzzlehttp-lib-support/](https://wordpress.org/support/topic/guzzlehttp-lib-support/)
    -  This reply was modified 3 years, 11 months ago by [maarten00](https://wordpress.org/support/users/maarten00/).
 *  Plugin Support [Rank Math Support](https://wordpress.org/support/users/rankmathteam/)
 * (@rankmathteam)
 * [3 years, 11 months ago](https://wordpress.org/support/topic/plugin-conflict-fatal-error/#post-15793681)
 * Hello [@oc-wordpress-web-designer](https://wordpress.org/support/users/oc-wordpress-web-designer/)&
   [@maarten00](https://wordpress.org/support/users/maarten00/) ,
 * Thank you for contacting the support and sorry for not following up quickly and
   any inconvenience that might have been caused due to that.
 * Please update to the latest version where we have updated the library.
 * Hope that helps.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Plugin Conflict Fatal Error’ is closed to new replies.

 * ![](https://ps.w.org/fast-indexing-api/assets/icon.svg?rev=2919547)
 * [Instant Indexing for Google](https://wordpress.org/plugins/fast-indexing-api/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/fast-indexing-api/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/fast-indexing-api/)
 * [Active Topics](https://wordpress.org/support/plugin/fast-indexing-api/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/fast-indexing-api/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/fast-indexing-api/reviews/)

 * 2 replies
 * 3 participants
 * Last reply from: [Rank Math Support](https://wordpress.org/support/users/rankmathteam/)
 * Last activity: [3 years, 11 months ago](https://wordpress.org/support/topic/plugin-conflict-fatal-error/#post-15793681)
 * Status: resolved