Title: CRITICAL Uncaught ArgumentCountError
Last modified: August 18, 2020

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# CRITICAL Uncaught ArgumentCountError

 *  Resolved [Nico Marcuz](https://wordpress.org/support/users/nick7766/)
 * (@nick7766)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/error-after-subscribe/)
 * Hi There!
 * We are using MailChimp-Extension Version 0.5.20. WooCommerce 4.3.3 and WordPress
   5.4.2
 * If someone want to subscribe to our newsletter at [https://www.hello-world.net/newsletter/](https://www.hello-world.net/newsletter/).
   Give in his data and click the subscribe button. nothing will happen since 5 
   days.
 * Instead it will generate an entry in the errorlog from our WooCommerce plugin
   at status/logdata as you can see an example here:
 * ==================================
    2020-08-18T05:52:38+00:00 CRITICAL Uncaught
   ArgumentCountError: Too few arguments to function wpcf7_special_mail_tag(), 3
   passed in /kunden/469469_76275/webseiten/hello-world.net/wordpress/wp-includes/
   class-wp-hook.php on line 287 and exactly 4 expected in /kunden/469469_76275/
   webseiten/hello-world.net/wordpress/wp-content/plugins/contact-form-7/includes/
   special-mail-tags.php:9 Stack trace: #0 /kunden/469469_76275/webseiten/hello-
   world.net/wordpress/wp-includes/class-wp-hook.php(287): wpcf7_special_mail_tag(”,‘
   opt-in’, ”) #1 /kunden/469469_76275/webseiten/hello-world.net/wordpress/wp-includes/
   plugin.php(206): WP_Hook->apply_filters(”, Array) #2 /kunden/469469_76275/webseiten/
   hello-world.net/wordpress/wp-content/plugins/contact-form-7-mailchimp-extension/
   lib/handler.php(162): apply_filters(‘wpcf7_special_m…’, ”, ‘opt-in’, ”) #3 /kunden/
   469469_76275/webseiten/hello-world.net/wordpress/wp-content/plugins/contact-form-
   7-mailchimp-extension/lib/handler.php(234): cf7_mch_tag_replace(‘/\\[\\s*([a-
   zA-Z_…’, ‘[opt-in]’, Array) #4 /kunden/46946 in /kunden/469469_76275/webseiten/
   hello-world.net/wordpress/wp-content/plugins/contact-form-7/includes/special-
   mail-tags.php in Zeile 9 ================================
 * and in the GoogleDevTool Console
 * ======================
    jquery.js?ver=1.12.4-wp:4 POST [https://www.hello-world.net/wp-json/contact-form-7/v1/contact-forms/17605/feedback](https://www.hello-world.net/wp-json/contact-form-7/v1/contact-forms/17605/feedback)
   500 send @ jquery.js?ver=1.12.4-wp:4 ajax @ jquery.js?ver=1.12.4-wp:4 wpcf7.submit
   @ scripts.js?ver=5.2.1:295 (anonymous) @ scripts.js?ver=5.2.1:58 dispatch @ jquery.
   js?ver=1.12.4-wp:3 r.handle @ jquery.js?ver=1.12.4-wp:3 jquery.js?ver=1.12.4-
   wp:4 XHR failed loading: POST “[https://www.hello-world.net/wp-json/contact-form-7/v1/contact-forms/17605/feedback&#8221](https://www.hello-world.net/wp-json/contact-form-7/v1/contact-forms/17605/feedback&#8221);.
   send @ jquery.js?ver=1.12.4-wp:4 ajax @ jquery.js?ver=1.12.4-wp:4 wpcf7.submit
   @ scripts.js?ver=5.2.1:295 (anonymous) @ scripts.js?ver=5.2.1:58 dispatch @ jquery.
   js?ver=1.12.4-wp:3 r.handle @ jquery.js?ver=1.12.4-wp:3 ====================
 * we did not know what to do to fix this problem!
    thnx for helping & best regards
   Nico
    -  This topic was modified 5 years, 9 months ago by [Nico Marcuz](https://wordpress.org/support/users/nick7766/).
    -  This topic was modified 5 years, 9 months ago by [Nico Marcuz](https://wordpress.org/support/users/nick7766/).
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Ferror-after-subscribe%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Author [Renzo Johnson](https://wordpress.org/support/users/rnzo/)
 * (@rnzo)
 * [5 years, 8 months ago](https://wordpress.org/support/topic/error-after-subscribe/#post-13282434)
 * Come to https://chimpmatic.com and use our Live Help feature (Huge green bottom
   visible in any page bottom-right corner).  

Viewing 1 replies (of 1 total)

The topic ‘CRITICAL Uncaught ArgumentCountError’ is closed to new replies.

 * ![](https://ps.w.org/contact-form-7-mailchimp-extension/assets/icon-256x256.png?
   rev=1072113)
 * [Connect Contact Form 7 and Mailchimp](https://wordpress.org/plugins/contact-form-7-mailchimp-extension/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/contact-form-7-mailchimp-extension/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/contact-form-7-mailchimp-extension/)
 * [Active Topics](https://wordpress.org/support/plugin/contact-form-7-mailchimp-extension/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/contact-form-7-mailchimp-extension/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/contact-form-7-mailchimp-extension/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [Renzo Johnson](https://wordpress.org/support/users/rnzo/)
 * Last activity: [5 years, 8 months ago](https://wordpress.org/support/topic/error-after-subscribe/#post-13282434)
 * Status: resolved