Title: Call to undefined function curl_init()
Last modified: March 20, 2019

---

# Call to undefined function curl_init()

 *  Resolved [LordDunvegan](https://wordpress.org/support/users/lorddunvegan/)
 * (@lorddunvegan)
 * [7 years, 2 months ago](https://wordpress.org/support/topic/call-to-undefined-function-curl_init/)
 * Hi I have the following error on one of my WordPress sites. The server supports
   5 different sites and I have no issues with the others.
 * Can you help please?
 * Thanks – Richard
 *     ```
       Darwin Backup: v1.2.25,
       PHP Version: 7.3.3-1+ubuntu16.04.1+deb.sury.org+1,
       OS: Linux,
       SAPI: apache2handler,
       UNPACK: Array
       (
           [1] => 1
       )
       User Level: 10,
       WP_ALLOW_MULTISITE: false,
       MULTISITE: false,
       Error Object
       (
           [message:protected] => Call to undefined function curl_init()
           [string:Error:private] => Error: Call to undefined function curl_init() in /wp-content/plugins/gmail-smtp/class.phpmaileroauthgoogle.php:179
       Stack trace:
       #0 /wp-content/plugins/gmail-smtp/class.phpmaileroauthgoogle.php(159): GmailXOAuth2->request_offline_token()
       #1 /wp-content/plugins/gmail-smtp/PHPMailer/class.smtp.php(475): GmailXOAuth2->getOauth64()
       #2 /wp-content/plugins/gmail-smtp/class.phpmaileroauth.php(152): SMTP->authenticate('', '', 'XOAUTH2', '', '', Object(GmailXOAuth2))
       #3 /wp-content/plugins/gmail-smtp/PHPMailer/class.phpmailer.php(1542): PHPMailerOAuth->smtpConnect(Array)
       #4 /wp-content/plugins/gmail-smtp/PHPMailer/class.phpmailer.php(1337): PHPMailer->smtpSend('Date: Wed, 20 M...', '<p>Your backup ...')
       #5 /wp-content/plugins/gmail-smtp/PHPMailer/class.phpmailer.php(1215): PHPMailer->postSend()
       #6 /wp-content/plugins/gmail-smtp/main.php(943): PHPMailer->send()
       #7 /wp-content/plugins/darwin-backup/AnyWay/Tasks/WordpressMail.php(58): wp_mail(Array, '[*****andscie...', '<p>Your backup ...', Array, Array)
       #8 /wp-content/plugins/darwin-backup/AnyWay/QueueManager.php(92): AnyWay_Tasks_WordpressMail->runPartial(1553089334, 1553089353)
       #9 /wp-content/plugins/darwin-backup/AnyWay/Runner/Base.php(73): AnyWay_QueueManager->next(1553089334, 1553089353)
       #10 /wp-content/plugins/darwin-backup/classes/Page/Create.php(101): AnyWay_Runner_Base->nextStep(1553089334, 1553089353)
       #11 /wp-content/plugins/darwin-backup/classes/Page/Base.php(241): AnyWay_Wordpress_Page_Create->next_step_ajax('')
       #12 /wp-includes/class-wp-hook.php(286): AnyWay_Wordpress_Page_Base->safe_action('')
       #13 /wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters('', Array)
       #14 /wp-includes/plugin.php(465): WP_Hook->do_action(Array)
       #15 /wp-admin/admin-ajax.php(167): do_action('wp_ajax_anyway_...')
       #16 {main}
           [code:protected] => 0
           [file:protected] => /wp-content/plugins/gmail-smtp/class.phpmaileroauthgoogle.php
           [line:protected] => 179
           [trace:Error:private] => Array
               (
                   [0] => Array
                       (
                           [file] => /wp-content/plugins/gmail-smtp/class.phpmaileroauthgoogle.php
                           [line] => 159
                           [function] => request_offline_token
                           [class] => GmailXOAuth2
                           [type] => ->
                           [args] => Array
                               (
                               )
   
                       )
   
                   [1] => Array
                       (
                           [file] => /wp-content/plugins/gmail-smtp/PHPMailer/class.smtp.php
                           [line] => 475
                           [function] => getOauth64
                           [class] => GmailXOAuth2
                           [type] => ->
                           [args] => Array
                               (
                               )
   
                       )
   
                   [2] => Array
                       (
                           [file] => /wp-content/plugins/gmail-smtp/class.phpmaileroauth.php
                           [line] => 152
                           [function] => authenticate
                           [class] => SMTP
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => 
                                   [1] => 
                                   [2] => XOAUTH2
                                   [3] => 
                                   [4] => 
                                   [5] => GmailXOAuth2 Object
                                       (
                                           [oauthUserEmail:GmailXOAuth2:private] => administrator@scimednet.org
                                           [oauthRefreshToken:GmailXOAuth2:private] => 1/MVO792gtwc9QpzybibYijG6XTMfrLOqbuC4EnBbJlSs
                                           [oauthClientId:GmailXOAuth2:private] => 431011582919-nts3mivg07afdvt19uj1f0h5qo9bs43g.apps.googleusercontent.com
                                           [oauthClientSecret:GmailXOAuth2:private] => oNduzuxlhIaStmGv5bGO70DF
                                       )
   
                               )
   
                       )
   
                   [3] => Array
                       (
                           [file] => /wp-content/plugins/gmail-smtp/PHPMailer/class.phpmailer.php
                           [line] => 1542
                           [function] => smtpConnect
                           [class] => PHPMailerOAuth
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => Array
                                       (
                                       )
   
                               )
   
                       )
   
                   [4] => Array
                       (
                           [file] => /wp-content/plugins/gmail-smtp/PHPMailer/class.phpmailer.php
                           [line] => 1337
                           [function] => smtpSend
                           [class] => PHPMailer
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => Date: Wed, 20 Mar 2019 13:42:10 +0000
       To: webmaster@scimednet.org
       From: Scientific and Medical Network <info@scimednet.org>
       Subject: [*****andscientists.org] manual backup is ready
       Message-ID: <837595f59c90df35d24601e3b9d4e1b4@*****andscientists.org>
       X-Mailer: PHPMailer 5.2.26 (https://github.com/PHPMailer/PHPMailer)
       MIME-Version: 1.0
       Content-Type: text/html; charset=UTF-8
   
                                   [1] => <p>Your backup is located here:</p>
       <p>
           <a href="https://*****andscientists.org/wp-content/darwin-backup/restore.php?rid=5c9242ec93b504.47754565">https://*****andscientists.org/wp-content/darwin-backup/restore.php?rid=5c9242ec93b504.47754565</a>
       </p>
   
                               )
   
                       )
   
                   [5] => Array
                       (
                           [file] => /wp-content/plugins/gmail-smtp/PHPMailer/class.phpmailer.php
                           [line] => 1215
                           [function] => postSend
                           [class] => PHPMailer
                           [type] => ->
                           [args] => Array
                               (
                               )
   
                       )
   
                   [6] => Array
                       (
                           [file] => /wp-content/plugins/gmail-smtp/main.php
                           [line] => 943
                           [function] => send
                           [class] => PHPMailer
                           [type] => ->
                           [args] => Array
                               (
                               )
   
                       )
   
                   [7] => Array
                       (
                           [file] => /wp-content/plugins/darwin-backup/AnyWay/Tasks/WordpressMail.php
                           [line] => 58
                           [function] => wp_mail
                           [args] => Array
                               (
                                   [0] => Array
                                       (
                                           [0] => webmaster@scimednet.org
                                       )
   
                                   [1] => [*****andscientists.org] manual backup is ready
                                   [2] => <p>Your backup is located here:</p>
       <p>
           <a href="https://*****andscientists.org/wp-content/darwin-backup/restore.php?rid=5c9242ec93b504.47754565">https://*****andscientists.org/wp-content/darwin-backup/restore.php?rid=5c9242ec93b504.47754565</a>
       </p>
   
                                   [3] => Array
                                       (
                                       )
   
                                   [4] => Array
                                       (
                                           [0] => 
                                       )
   
                               )
   
                       )
   
                   [8] => Array
                       (
                           [file] => /wp-content/plugins/darwin-backup/AnyWay/QueueManager.php
                           [line] => 92
                           [function] => runPartial
                           [class] => AnyWay_Tasks_WordpressMail
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => 1553089334
                                   [1] => 1553089353
                               )
   
                       )
   
                   [9] => Array
                       (
                           [file] => /wp-content/plugins/darwin-backup/AnyWay/Runner/Base.php
                           [line] => 73
                           [function] => next
                           [class] => AnyWay_QueueManager
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => 1553089334
                                   [1] => 1553089353
                               )
   
                       )
   
                   [10] => Array
                       (
                           [file] => /wp-content/plugins/darwin-backup/classes/Page/Create.php
                           [line] => 101
                           [function] => nextStep
                           [class] => AnyWay_Runner_Base
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => 1553089334
                                   [1] => 1553089353
                               )
   
                       )
   
                   [11] => Array
                       (
                           [file] => /wp-content/plugins/darwin-backup/classes/Page/Base.php
                           [line] => 241
                           [function] => next_step_ajax
                           [class] => AnyWay_Wordpress_Page_Create
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => 
                               )
   
                       )
   
                   [12] => Array
                       (
                           [file] => /wp-includes/class-wp-hook.php
                           [line] => 286
                           [function] => safe_action
                           [class] => AnyWay_Wordpress_Page_Base
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => 
                               )
   
                       )
   
                   [13] => Array
                       (
                           [file] => /wp-includes/class-wp-hook.php
                           [line] => 310
                           [function] => apply_filters
                           [class] => WP_Hook
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => 
                                   [1] => Array
                                       (
                                           [0] => 
                                       )
   
                               )
   
                       )
   
                   [14] => Array
                       (
                           [file] => /wp-includes/plugin.php
                           [line] => 465
                           [function] => do_action
                           [class] => WP_Hook
                           [type] => ->
                           [args] => Array
                               (
                                   [0] => Array
                                       (
                                           [0] => 
                                       )
   
                               )
   
                       )
   
                   [15] => Array
                       (
                           [file] => /wp-admin/admin-ajax.php
                           [line] => 167
                           [function] => do_action
                           [args] => Array
                               (
                                   [0] => wp_ajax_anyway_next_step_ajax
                               )
   
                       )
   
               )
   
           [previous:Error:private] => 
       )
       ```
   

Viewing 1 replies (of 1 total)

 *  Plugin Author [Aleksandr Guidrevitch](https://wordpress.org/support/users/aguidrevitch/)
 * (@aguidrevitch)
 * [7 years, 1 month ago](https://wordpress.org/support/topic/call-to-undefined-function-curl_init/#post-11429876)
 * Hi,
 * curl library seems to be missing/not installed
 * WBR,
    Alex

Viewing 1 replies (of 1 total)

The topic ‘Call to undefined function curl_init()’ is closed to new replies.

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 * Last reply from: [Aleksandr Guidrevitch](https://wordpress.org/support/users/aguidrevitch/)
 * Last activity: [7 years, 1 month ago](https://wordpress.org/support/topic/call-to-undefined-function-curl_init/#post-11429876)
 * Status: resolved