wpsnoop Fatal error: Cannot redeclare yit_get_upgrade_files()

If you are dealing with a WordPress issue where a PHP Function yit_get_upgrade_files() 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 53 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 53 different instances of potential conflicts where different plugins or themes share the function name.

Examples of this error include:

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-advanced-refund-system-for-woocommerce/plugin-fw/init.php:99)

This file is part of the WordPress plugin YITH Advanced Refund System for WooCommerce and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-color-and-label-variations-for-woocommerce/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH Color and Label Variations for WooCommerce and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-custom-thank-you-page-for-woocommerce/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH Custom Thank You Page for WooCommerce and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-desktop-notifications-for-woocommerce/plugin-fw/init.php:99)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-donations-for-woocommerce/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-essential-kit-for-woocommerce-1/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH Essential Kit for WooCommerce #1 and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-infinite-scrolling/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-live-chat/plugin-fw/init.php:99)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-paypal-express-checkout-for-woocommerce/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-paypal-payments-for-woocommerce/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-pre-order-for-woocommerce/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH Pre-Order for WooCommerce and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-product-size-charts-for-woocommerce/plugin-fw/init.php:99)

This file is part of the WordPress plugin YITH Product Size Charts for WooCommerce and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-purchased-column-for-woocommerce/plugin-fw/init.php:99)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-added-to-cart-popup/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce Added to Cart Popup and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-advanced-reviews/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-affiliates/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-ajax-navigation/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce Ajax Product Filter and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-ajax-search/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-authorizenet-payment-gateway/plugin-fw/init.php:99)

This file is part of the WordPress plugin YITH WooCommerce Authorize.net Payment Gateway and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-badges-management/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-best-sellers/plugin-fw/init.php:99)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-brands-add-on/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce Brands Add-on and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-bulk-product-editing/plugin-fw/init.php:99)

This file is part of the WordPress plugin YITH WooCommerce Bulk Product Editing and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-cart-messages/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-catalog-mode/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-category-accordion/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-compare/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-dynamic-pricing-and-discounts/plugin-fw/init.php:99)

This file is part of the WordPress plugin YITH WooCommerce Dynamic Pricing and Discounts and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-featured-video/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-frequently-bought-together/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce Frequently Bought Together and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-gift-cards/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-mailchimp/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-multi-step-checkout/plugin-fw/init.php:99)

This file is part of the WordPress plugin YITH WooCommerce Multi-step Checkout and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-name-your-price/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce Name Your Price and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-order-tracking/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-pdf-invoice/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce PDF Invoice and Shipping List and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-points-and-rewards/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-popup/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-product-add-ons/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce Product Add-ons & Extra Options and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-product-bundles/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-product-slider-carousel/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce Product Slider Carousel and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-questions-and-answers/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-quick-view/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-recover-abandoned-cart/plugin-fw/init.php:99)

This file is part of the WordPress plugin YITH WooCommerce Recover Abandoned Cart and could be interacting with another theme or plugin and causing a fatal error.

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-request-a-quote/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-review-reminder/plugin-fw/init.php:99)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-save-for-later/plugin-fw/init.php:99)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-social-login/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-subscription/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-tab-manager/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-waiting-list/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-wishlist/plugin-fw/init.php:87)

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

PHP Fatal error: Cannot redeclare yit_get_upgrade_files() (previously declared in wp-content/plugins/yith-woocommerce-zoom-magnifier/plugin-fw/init.php:87)

This file is part of the WordPress plugin YITH WooCommerce Product Gallery & Image Zoom 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.