Fatal error with woocommerce 3.3.1

me too:

Fatal error: Uncaught Error: Class ‘MailChimp_WooCommerce_MailChimpApi’ not found in /mnt/web006/c2/58/57121558/htdocs/WordPress_SecureMode_01/wp-content/plugins/mailchimp-for-woocommerce/mailchimp-woocommerce.php:83 Stack trace: #0 /mnt/web006/c2/58/57121558/htdocs/WordPress_SecureMode_01/wp-content/plugins/mailchimp-for-woocommerce/mailchimp-woocommerce.php(357): mailchimp_get_api() #1 /mnt/web006/c2/58/57121558/htdocs/WordPress_SecureMode_01/wp-content/plugins/mailchimp-for-woocommerce/includes/class-mailchimp-woocommerce-activator.php(47): mailchimp_update_connected_site_script() #2 /mnt/web006/c2/58/57121558/htdocs/WordPress_SecureMode_01/wp-content/plugins/mailchimp-for-woocommerce/mailchimp-woocommerce.php(220): MailChimp_Woocommerce_Activator::activate() #3 /mnt/web006/c2/58/57121558/htdocs/WordPress_SecureMode_01/wp-includes/class-wp-hook.php(286): activate_mailchimp_woocommerce(”) #4 /mnt/web006/c2/58/57121558/htdocs/WordPress_SecureMode_01/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(”, Array) # in /mnt/web006/c2/58/57121558/htdocs/WordPress_SecureMode_01/wp-content/plugins/mailchimp-for-woocommerce/mailchimp-woocommerce.php on line 83

I think it might even have broken my entire site, because I got a 500 HTTP error on everything. Deactivating all plugins and reactivating 1-by-1 to find the problematic plugin led to this error. Which leads me to believe that it is this plugin that caused the 500.

I too am getting the same exact error. I just reported this to MailChimp support directly.

i’m looking for a solution too

It kept working for me after the upgrade, however, I had to disable all P/Us to debug a WC problem. Upon reactivating I got the error.

Rather troubling to see several posts on this problem and no response from MailChimp for about 4 weeks now since informed.

I have not received a response since contacting MailChimp directly 2 weeks ago. I’m going to try to get this escalated again today.

In lieu of a permanent fix, MailChimp has provided access to a previous version of the plugin (vers 2.1.3)…

In some cases downloading and installing a previous version of MailChimp for WooCommerce, such as 2.1.3, since the issue appears related specifically to the most recent version of the plugin 2.1.4. This previous version can be found here: https://github.com/mailchimp/mc-woocommerce/releases/tag/v2.1.3

I just tried it and was able to reactivate the older version with no fatal errors. I have set the plugin to not auto update until a fixed version is released.

I hope this is helpful in the meantime.

MailChimp released version 2.1.5 which appears to resolve the issue that existed in version 2.1.4. I updated, deactivated the plugin, and reactivated it and no longer get the fatal error.

The new MailChimp version 2.1.5 also resolved the issue for me.