Title: Uncaught Error: Call to undefined function GuzzleHttp\choose_handler()
Last modified: December 30, 2020

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# Uncaught Error: Call to undefined function GuzzleHttp\choose_handler()

 *  Resolved [raaj786](https://wordpress.org/support/users/raaj786/)
 * (@raaj786)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-error-call-to-undefined-function-guzzlehttpchoose_handler/)
 * Fatal error: Uncaught Error: Call to undefined function GuzzleHttp\choose_handler()
   in …/public_html/wp-content/plugins/mollie-payments-for-woocommerce/vendor/guzzlehttp/
   guzzle/src/HandlerStack.php:42 Stack trace: #0 …/public_html/wp-content/plugins/
   mollie-payments-for-woocommerce/vendor/mollie/mollie-api-php/src/MollieApiClient.
   php(296): GuzzleHttp\HandlerStack::create() #1 …/public_html/wp-content/plugins/
   mollie-payments-for-woocommerce/src/Mollie/WC/Helper/Api.php(46): Mollie\Api\
   MollieApiClient->__construct() #2 …/public_html/wp-content/plugins/mollie-payments-
   for-woocommerce/src/Mollie/WC/Helper/Data.php(341): Mollie_WC_Helper_Api->getApiClient(
   false) #3 …/public_html/wp-content/plugins/mollie-payments-for-woocommerce/src/
   Mollie/WC/Helper/Data.php(301): Mollie_WC_Helper_Data->getApiPaymentMethods(false,
   true) #4 …/public_html/wp-content/plugins/mollie-payments-for-woocommerce/src/
   Mollie/WC/Helper/Data.php in …/public_html/wp-content/plugins/mollie-payments-
   for-woocommerce/vendor/guzzlehttp/guzzle/src/HandlerStack.php on line 42

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

 *  Plugin Support [Syde Niklas](https://wordpress.org/support/users/niklasinpsyde/)
 * (@niklasinpsyde)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-error-call-to-undefined-function-guzzlehttpchoose_handler/#post-13847348)
 * Hi [@raaj786](https://wordpress.org/support/users/raaj786/),
 * We are currently working to resolve potential library conflicts like this.
    Can
   you please disable all other plugins to see which one triggers the conflict? 
   Our most recent version 6.0 includes a fix for guzzle related issues, but we 
   aim to provide some more improvements soon.
 * Kind regards,
    Niklas
 *  Thread Starter [raaj786](https://wordpress.org/support/users/raaj786/)
 * (@raaj786)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-error-call-to-undefined-function-guzzlehttpchoose_handler/#post-13847686)
 * Hi [@niklasinpsyde](https://wordpress.org/support/users/niklasinpsyde/)
 * I have upload version 6.0 and now its seem like issue has been fixed.
 * Thanks for your help.
 *  Plugin Support [Syde Niklas](https://wordpress.org/support/users/niklasinpsyde/)
 * (@niklasinpsyde)
 * [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-error-call-to-undefined-function-guzzlehttpchoose_handler/#post-13848291)
 * Hi [@raaj786](https://wordpress.org/support/users/raaj786/),
 * Glad to hear that our latest version 6.0 works for you.
    So I am going to mark
   this resolved for now. Our next release will include some more improvements in
   case any other guzzle issues come up. Please do not hesitate to reach out if 
   any questions remain.
 * Kind regards,
    Niklas

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

The topic ‘Uncaught Error: Call to undefined function GuzzleHttp\choose_handler()’
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 * ![](https://ps.w.org/mollie-payments-for-woocommerce/assets/icon-256x256.png?
   rev=3090580)
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## Tags

 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)

 * 3 replies
 * 2 participants
 * Last reply from: [Syde Niklas](https://wordpress.org/support/users/niklasinpsyde/)
 * Last activity: [5 years, 5 months ago](https://wordpress.org/support/topic/uncaught-error-call-to-undefined-function-guzzlehttpchoose_handler/#post-13848291)
 * Status: resolved