Title: Internal Error Last modified: September 26, 2019 --- # Internal Error * [wandriska](https://wordpress.org/support/users/wandriska/) * (@wandriska) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/) * When I enable this plugin, every sale made on site falls over at the checkout. I get a “internal server” error. * It used to work fine, however now it does not. * No error messages generated in the logs The only thing I can think of is either an update caused a problem OR I changed the URL on site, on backend to https….. I had forgotten to do that when I moved the site to https 2 years ago. I have gone through and checked URLS on WOO and AC…can’t see any issues. * Any ideas for a fix. * thank you Andrew - This topic was modified 6 years, 8 months ago by [wandriska](https://wordpress.org/support/users/wandriska/). * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Finternal-error-25%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 8 replies - 1 through 8 (of 8 total) * Thread Starter [wandriska](https://wordpress.org/support/users/wandriska/) * (@wandriska) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11970052) * I - This reply was modified 6 years, 8 months ago by [wandriska](https://wordpress.org/support/users/wandriska/). * Plugin Author [equalserving](https://wordpress.org/support/users/equalserving/) * (@equalserving) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11971505) * Hi, * You said that you enabled logging and nothing was added to the log file. * Can you please add a product to your cart and go through the purchase process as far as it will take you. * Once the sale fails, go to the link below and follow the directions at Step 3 to send us the contents of the log file for today. Open a support ticket and attach the log file. * [https://equalserving.uservoice.com/knowledgebase/articles/1889128-customers-are-not-being-added-to-activecampaign](https://equalserving.uservoice.com/knowledgebase/articles/1889128-customers-are-not-being-added-to-activecampaign) * Thanks * Thread Starter [wandriska](https://wordpress.org/support/users/wandriska/) * (@wandriska) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11973405) * I will do as you suggest. However what I have isolated that the issue disappears when I disable the /WC-AC Hook/ plugin. There is definately a conflict there. I will do some testing over the weekend. thank you * Thread Starter [wandriska](https://wordpress.org/support/users/wandriska/) * (@wandriska) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11973412) * mm.. I was looking at the WP logs..not WC so * I had a quick look at the WC ones and this is what I found: * 2019-09-24T10:38:22+00:00 CRITICAL Cannot declare class AC_Connector, because the name is already in use in /home/english/public_html/wp-content/plugins/wc- ac-hook/activecampaign-api-php/includes/Connector.class.php on line 8 - This reply was modified 6 years, 8 months ago by [wandriska](https://wordpress.org/support/users/wandriska/). * Thread Starter [wandriska](https://wordpress.org/support/users/wandriska/) * (@wandriska) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11974187) * Plugin Author [equalserving](https://wordpress.org/support/users/equalserving/) * (@equalserving) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11975033) * Hi, * Yes, there are other plugins that are using the ActiveCampaign API too and when both are installed on the same site it will generate that error. * The latest release of our plugin uses namespace to avoid these conflicts. But be warned you must be running PHP version 5.3 or greater to run the latest version. * Thanks * Thread Starter [wandriska](https://wordpress.org/support/users/wandriska/) * (@wandriska) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11977188) * I am running Php 7 with your latest version, so, in theory, this problem should not be happening, right? * Plugin Author [equalserving](https://wordpress.org/support/users/equalserving/) * (@equalserving) * [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11977771) * Hi! * I am sorry for the confusion. Our plugin is not throwing that error. The error is being thrown by WC AC Hook plugin and that is why when you disabled it the site worked. * Because we wanted to avoid conflicts with other plugins that use the ActiveCampaign API, we employed namespaces in the latest version. You probably have another plugin besides WC AC Hook that uses the ActiveCampaign API that is causing the conflict. Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘Internal Error’ is closed to new replies. * ![](https://ps.w.org/es-woocommerce-activecampaign/assets/icon-256x256.png?rev =3359501) * [Connect WooCommerce to ActiveCampaign by EqualServing](https://wordpress.org/plugins/es-woocommerce-activecampaign/) * [Frequently Asked Questions](https://wordpress.org/plugins/es-woocommerce-activecampaign/#faq) * [Support Threads](https://wordpress.org/support/plugin/es-woocommerce-activecampaign/) * [Active Topics](https://wordpress.org/support/plugin/es-woocommerce-activecampaign/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/es-woocommerce-activecampaign/unresolved/) * [Reviews](https://wordpress.org/support/plugin/es-woocommerce-activecampaign/reviews/) * 8 replies * 2 participants * Last reply from: [equalserving](https://wordpress.org/support/users/equalserving/) * Last activity: [6 years, 8 months ago](https://wordpress.org/support/topic/internal-error-25/#post-11977771) * Status: not resolved