Title: Error when activating plugin
Last modified: March 12, 2020

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# Error when activating plugin

 *  Resolved [mikevdv](https://wordpress.org/support/users/mikevdv/)
 * (@mikevdv)
 * [6 years, 2 months ago](https://wordpress.org/support/topic/error-when-activating-plugin-38/)
 * Hello,
 * When I try to activate your plugin, I’m getting this error:
    `Fatal error: Uncaught
   Error: Call to undefined function _PhpScoper5e258eb49a208\GuzzleHttp\choose_handler()
   in /home/**REDACTED**/domains/**REDACTED**/public_html/wp-content/plugins/cf7-
   mollie/includes/libs/mollie-api-php/vendor/guzzlehttp/guzzle/src/HandlerStack.
   php:39 Stack trace: #0 /home/**REDACTED**/domains/**REDACTED**/public_html/wp-
   content/plugins/cf7-mollie/includes/libs/mollie-api-php/vendor/guzzlehttp/guzzle/
   src/Client.php(65): _PhpScoper5e258eb49a208\GuzzleHttp\HandlerStack::create()#
   1 /home/**REDACTED**/domains/**REDACTED**/public_html/wp-content/plugins/cf7-
   mollie/includes/libs/mollie-api-php/src/MollieApiClient.php(237): _PhpScoper5e258eb49a208\
   GuzzleHttp\Client->__construct(Array) #2 /home/**REDACTED**/domains/**REDACTED**/
   public_html/wp-content/plugins/cf7-mollie/includes/php/initialize.php(16): Mollie\
   Api\MollieApiClient->__construct() #3 /home/**REDACTED**/domains/**REDACTED**/
   public_html/wp-content/plugins/cf7-mollie/includes/php/webhook.php(2): require_once('/
   home/**REDACTED**.. in /home/**REDACTED**/domains/**REDACTED**/public_html/wp-
   content/plugins/cf7-mollie/includes/libs/mollie-api-php/vendor/guzzlehttp/guzzle/
   src/HandlerStack.php on line 39`
 * Wordpress: 5.3.2
    CF7: 5.1.7
    -  This topic was modified 6 years, 2 months ago by [mikevdv](https://wordpress.org/support/users/mikevdv/).

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [tssv](https://wordpress.org/support/users/tssv/)
 * (@tssv)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/error-when-activating-plugin-38/#post-12714432)
 * I have this error too… Is there a time when are planning to work at this bug?
 *  Thread Starter [mikevdv](https://wordpress.org/support/users/mikevdv/)
 * (@mikevdv)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/error-when-activating-plugin-38/#post-12714506)
 * >  I have this error too… Is there a time when are planning to work at this bug?
 * [@tssv](https://wordpress.org/support/users/tssv/) I found the solution after
   some days. When you have both Woocommerce mollie plugin installed and this plugin,
   it will conflict with each other. First disable the Woocommerce mollie plugin
   and after that enable this plugin.
 *  [tssv](https://wordpress.org/support/users/tssv/)
 * (@tssv)
 * [6 years, 1 month ago](https://wordpress.org/support/topic/error-when-activating-plugin-38/#post-12714560)
 * It worked!
 * thanks!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Error when activating plugin’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [tssv](https://wordpress.org/support/users/tssv/)
 * Last activity: [6 years, 1 month ago](https://wordpress.org/support/topic/error-when-activating-plugin-38/#post-12714560)
 * Status: resolved