wpsnoop Fatal error: Cannot redeclare activate_plugin_name()

If you are dealing with a WordPress issue where a PHP Function activate_plugin_name() was already declared it is most likely due to a plugin/theme conflict.

wpsnoop scanned and analyzed over 100,000 WordPress plugins and themes to find and locate potential conflicts including functions that share the same name.

This page has information on the 27 places where that function is declared and used in WordPress plugins and themes.

Note: Our database currently only taps into the free themes and plugins available in the publicly available WordPress plugins and themes, if your site uses paid plugins, themes or custom code there may be additional conflicts.


Our database has uncovered 27 different instances of potential conflicts where different plugins or themes share the function name.

Examples of this error include:

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/my-restaurant-reviews/my-restaurant-reviews.php:43)

This file is part of the WordPress plugin My Restaurant Reviews and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/wp-peon/wp-peon.php:37)

This file is part of the WordPress plugin WP Peon and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/wp-quizr/wp-quizr.php:29)

This file is part of the WordPress plugin WP Quizr and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/simple-video-info/simple-video-info.php:37)

This file is part of the WordPress plugin Simple Video Info and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/mockup/index.php:46)

This file is part of the WordPress plugin MockUp and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/s2w-payments/s2w-payments.php:60)

This file is part of the WordPress plugin Square To WooCommerce Payments and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/bookedin-online-appointment-scheduling/bookedin.php:26)

This file is part of the WordPress plugin Bookedin Wordpress Appointment Scheduling Plugin and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/tldr-cta/post-summary.php:67)

This file is part of the WordPress plugin TLDR and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/buddy-views/buddy-views.php:63)

This file is part of the WordPress plugin Buddy Views and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/lnd-for-wp/lnd-for-wp.php:41)

This file is part of the WordPress plugin LND For WP and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/little-social/little-social-media.php:44)

This file is part of the WordPress plugin LITTLE Social and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/ssl-quality-checker/ssl-labs.php:48)

This file is part of the WordPress plugin SSL Quality Checker and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/nopassconfirm/nopassconfirm.php:37)

This file is part of the WordPress plugin NoPassConfirm and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/social-sharing-icons/oa-social-sharing-icons.php:24)

This file is part of the WordPress plugin Sharing Icons & Share Buttons and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/customer-chat-for-facebook/customer-chat-for-facebook.php:44)

This file is part of the WordPress plugin Customer Chat for Facebook and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/beaver-nerd-holidays/BeaverNerdHolidays.php:37)

This file is part of the WordPress plugin BeaverNerdHolidays and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/min-max-quantities-for-woocommerce/min-max-quantities-for-woocommerce.php:33)

This file is part of the WordPress plugin Min Max Quantities For WooCommerce and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/hearthisat/hearthis.php:44)

This file is part of the WordPress plugin hearthis.at and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/wilson/merch-stock.php:41)

This file is part of the WordPress plugin Wilson and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/rob-bot-video-slider/bot-video-slider.php:37)

This file is part of the WordPress plugin Rob-Bot Video Slider and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/keitaro-tracker-integration/keitaro.php:21)

This file is part of the WordPress plugin Keitaro Tracker Integration and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/sortd/sortd.php:43)

This file is part of the WordPress plugin SORTD and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/mobile-redirect-with-slug/mobile-redirect-with-slug.php:34)

This file is part of the WordPress plugin Mobile Redirect With Slug and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/upunzipper/upunzipper.php:37)

This file is part of the WordPress plugin Upunzipper and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/imajize/imajize.php:37)

This file is part of the WordPress plugin Imajize and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/grs-lnd-for-wp/lnd-for-wp.php:41)

This file is part of the WordPress plugin GRS LND For WP and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare activate_plugin_name() (previously declared in wp-content/plugins/cy-express-for-woocommerce/cy-for-woocommerce.php:37)

This file is part of the WordPress plugin CY.Express for WooCommerce and could be interacting with another theme or plugin and causing a fatal error.

The error occurs because two (or more) plugins that you are using are both trying to declare a function with the same name.