Title: Topic Tag: undefined error | WordPress.org --- # Topic Tag: undefined error 1 [2](https://wordpress.org/support/topic-tag/undefined-error/page/2/?output_format=md) [→](https://wordpress.org/support/topic-tag/undefined-error/page/2/?output_format=md) - Topic - Participants - Replies - Last Post * - [[Astra] Undefined array key](https://wordpress.org/support/topic/undefined-array-key-48/) - Started by: [Snaphaan](https://wordpress.org/support/users/snaphaan/) - 2 - 7 - [1 year, 10 months ago](https://wordpress.org/support/topic/undefined-array-key-48/#post-17902611) - [Herman Asrori (BSF)](https://wordpress.org/support/users/bsfherman/) * - [[Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin] Undefined error. Key: browser-error](https://wordpress.org/support/topic/undefined-error-key-browser-error/) - Started by: [stelfair](https://wordpress.org/support/users/stelfair/) - 2 - 4 - [3 years, 2 months ago](https://wordpress.org/support/topic/undefined-error-key-browser-error/#post-16611496) - [Himanshu Anil Shah](https://wordpress.org/support/users/hashah3/) * - [[Yoast SEO - Advanced SEO with real-time guidance and built-in AI] E_ERROR – Uncaught Error: Call to undefined function wp_is_block_theme()](https://wordpress.org/support/topic/e_error-uncaught-error-call-to-undefined-function-wp_is_block_theme/) - Started by: [sanderstalpers](https://wordpress.org/support/users/sanderstalpers/) - 2 - 3 - [4 years, 2 months ago](https://wordpress.org/support/topic/e_error-uncaught-error-call-to-undefined-function-wp_is_block_theme/#post-15492650) - [sanderstalpers](https://wordpress.org/support/users/sanderstalpers/) * - [[WooCommerce] unwanted word on checkout page](https://wordpress.org/support/topic/unwanted-word-on-checkout-page/) - Started by: [seutaojiang](https://wordpress.org/support/users/seutaojiang/) - 3 - 2 - [4 years, 5 months ago](https://wordpress.org/support/topic/unwanted-word-on-checkout-page/#post-15226671) - [Mirko P.](https://wordpress.org/support/users/rainfallnixfig/) * - [[Delhivery Logistics Courier] Debug error warning and notice [Notice: Undefined index: token in ]](https://wordpress.org/support/topic/debug-error-warning-and-notice-notice-undefined-index-token-in/) - Started by: [shhussain72](https://wordpress.org/support/users/shhussain72/) - 1 - 0 - [4 years, 8 months ago](https://wordpress.org/support/topic/debug-error-warning-and-notice-notice-undefined-index-token-in/) - [shhussain72](https://wordpress.org/support/users/shhussain72/) * - [[Pricing Table by Supsystic] Undefined Error when open Pricing Table](https://wordpress.org/support/topic/undefined-error-when-open-pricing-table/) - Started by: [stubok](https://wordpress.org/support/users/stubok/) - 2 - 1 - [5 years, 2 months ago](https://wordpress.org/support/topic/undefined-error-when-open-pricing-table/#post-14286993) - [Support Ole](https://wordpress.org/support/users/trsupsys/) * - [getting join() error with undefined $classes variable](https://wordpress.org/support/topic/getting-join-error-with-undefined-classes-variable/) - Started by: [sprowt](https://wordpress.org/support/users/sprowt/) - 2 - 6 - [5 years, 3 months ago](https://wordpress.org/support/topic/getting-join-error-with-undefined-classes-variable/#post-14046158) - [sprowt](https://wordpress.org/support/users/sprowt/) * - [[Network Posts Extended] Notice: Undefined offset](https://wordpress.org/support/topic/notice-undefined-offset-18/) - Started by: [al3ilm](https://wordpress.org/support/users/al3ilm/) - 2 - 10 - [5 years, 4 months ago](https://wordpress.org/support/topic/notice-undefined-offset-18/#post-14012478) - [johnzenausa](https://wordpress.org/support/users/johnzenausa/) * - [[WPBakery Page Builder Simple All Responsive] Undefined property: Vc_Updater](https://wordpress.org/support/topic/undefined-property-vc_updater/) - Started by: [DianaLucky](https://wordpress.org/support/users/dianal/) - 1 - 0 - [5 years, 7 months ago](https://wordpress.org/support/topic/undefined-property-vc_updater/) - [DianaLucky](https://wordpress.org/support/users/dianal/) * - [[Slider, Gallery, and Carousel by MetaSlider - Image Slider, Video Slider] Undefined error occurred](https://wordpress.org/support/topic/undefined-error-occurred/) - Started by: [chrisrarendt](https://wordpress.org/support/users/chrisrarendt/) - 3 - 6 - [5 years, 9 months ago](https://wordpress.org/support/topic/undefined-error-occurred/#post-13332570) - [Kevin Batdorf](https://wordpress.org/support/users/kbat82/) * - [[Easy!Appointments] form fields not showing cannot configure it](https://wordpress.org/support/topic/form-fields-not-showing-cannot-configure-it/) - Started by: [sipnsurf](https://wordpress.org/support/users/sipnsurf/) - 2 - 1 - [6 years, 5 months ago](https://wordpress.org/support/topic/form-fields-not-showing-cannot-configure-it/#post-12258973) - [alextselegidis](https://wordpress.org/support/users/alextselegidis/) * - [[CartFlows – Funnel Builder & Checkout Plugin for WooCommerce] Undefined Error on the Below Footer of the Checkout Page](https://wordpress.org/support/topic/undefined-error-on-the-below-footer-of-the-checkout-page/) - Started by: [Wasim](https://wordpress.org/support/users/thewasimofficial/) - 3 - 5 - [6 years, 9 months ago](https://wordpress.org/support/topic/undefined-error-on-the-below-footer-of-the-checkout-page/#post-11921347) - [CartFlows Team](https://wordpress.org/support/users/cartflows/) * - [[Autoptimize] Autoptimize and Async Javascript not playing nice together](https://wordpress.org/support/topic/autoptimize-and-async-javascript-not-playing-nice-together/) - Started by: [BlueSteam](https://wordpress.org/support/users/bluesteam/) - 2 - 3 - [6 years, 10 months ago](https://wordpress.org/support/topic/autoptimize-and-async-javascript-not-playing-nice-together/#post-11837952) - [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * - [[If Menu - Visibility control for Menus] Subtle bug in if-menu.php, with fix](https://wordpress.org/support/topic/subtle-bug-in-if-menu-php-with-fix/) - Started by: [Mike Schinkel](https://wordpress.org/support/users/mikeschinkel/) - 2 - 1 - [6 years, 11 months ago](https://wordpress.org/support/topic/subtle-bug-in-if-menu-php-with-fix/#post-11694037) - [Andrei](https://wordpress.org/support/users/andreiigna/) * - [Call to undefined function genesis_share_icon_output line 342](https://wordpress.org/support/topic/call-to-undefined-function-genesis_share_icon_output-line-342/) - Started by: [mherrity](https://wordpress.org/support/users/mherrity/) - 3 - 2 - [7 years ago](https://wordpress.org/support/topic/call-to-undefined-function-genesis_share_icon_output-line-342/#post-11629441) - [Rajan Vijayan](https://wordpress.org/support/users/rajanit2000/) * - [[User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration] Undefined on Featured Image upload](https://wordpress.org/support/topic/undefined-on-featured-image-upload/) - Started by: [Stacy_WV](https://wordpress.org/support/users/stacy_wv/) - 3 - 9 - [7 years, 2 months ago](https://wordpress.org/support/topic/undefined-on-featured-image-upload/#post-11320025) - [Mehedi Hasan](https://wordpress.org/support/users/thebengalboy/) * - [[Addons & Templates for Elementor by Sizzify Lite] “undefined” error on Newsletter form](https://wordpress.org/support/topic/undefined-error-on-newsletter-form/) [1](https://wordpress.org/support/topic/undefined-error-on-newsletter-form/?output_format=md) [2](https://wordpress.org/support/topic/undefined-error-on-newsletter-form/page/2/?output_format=md) - Started by: [leanebra](https://wordpress.org/support/users/leanebra/) - 9 - 26 - [7 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-on-newsletter-form/page/2/#post-11465742) - [raducan](https://wordpress.org/support/users/raducan/) * - [[WP-Chatbot for Messenger] Undefined variable – Chatbot](https://wordpress.org/support/topic/undefined-variable-60/) - Started by: [Richard](https://wordpress.org/support/users/rgenck/) - 0 - 3 - [7 years, 9 months ago](https://wordpress.org/support/topic/undefined-variable-60/#post-10616183) - [Richard](https://wordpress.org/support/users/rgenck/) * - [[Material Design for Contact Form 7] Undefined Error on Send Button](https://wordpress.org/support/topic/undefined-error-on-send-button/) - Started by: [shubhamdahale](https://wordpress.org/support/users/shubhamdahale/) - 3 - 10 - [8 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-on-send-button/#post-10182542) - [GusRuss89](https://wordpress.org/support/users/gusruss89/) * - [[WP Super Cache] WooCommerce “Undefined error” when creating or deleting category](https://wordpress.org/support/topic/woocommerce-undefined-error-when-creating-or-deleting-category/) - Started by: [brixxo](https://wordpress.org/support/users/brixxo/) - 1 - 0 - [8 years, 6 months ago](https://wordpress.org/support/topic/woocommerce-undefined-error-when-creating-or-deleting-category/) - [brixxo](https://wordpress.org/support/users/brixxo/) * - [[Gravity Forms - Uploads as Attachments] Deprecated code](https://wordpress.org/support/topic/deprecated-code-7/) - Started by: [flojnel](https://wordpress.org/support/users/flojnel/) - 1 - 0 - [8 years, 6 months ago](https://wordpress.org/support/topic/deprecated-code-7/) - [flojnel](https://wordpress.org/support/users/flojnel/) * - [[Multi Step Form] Undefined error](https://wordpress.org/support/topic/undefined-error-6/) - Started by: [taiki3ro](https://wordpress.org/support/users/taiki3ro/) - 2 - 1 - [9 years, 1 month ago](https://wordpress.org/support/topic/undefined-error-6/#post-9073233) - [mondula2016](https://wordpress.org/support/users/mondula2016/) * - [[Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin] UM displays undefined error when I click to upload cover photo](https://wordpress.org/support/topic/um-displays-undefined-error-when-i-click-to-upload-cover-photo/) - Started by: [iamedoz](https://wordpress.org/support/users/iamedoz/) - 2 - 6 - [9 years, 6 months ago](https://wordpress.org/support/topic/um-displays-undefined-error-when-i-click-to-upload-cover-photo/#post-8520174) - [borisv](https://wordpress.org/support/users/borisv/) * - [Hyperlinks underdefined](https://wordpress.org/support/topic/hyperlinks-underdefined/) - Started by: [rwbra](https://wordpress.org/support/users/rwbra/) - 2 - 1 - [9 years, 7 months ago](https://wordpress.org/support/topic/hyperlinks-underdefined/#post-8417244) - [James Huff](https://wordpress.org/support/users/macmanx/) * - [[Testimonial Slider] Undefined Error When Inserting Testimonial](https://wordpress.org/support/topic/undefined-error-when-inserting-testimonial/) - Started by: [Marta Goertzen](https://wordpress.org/support/users/mdg1735/) - 2 - 3 - [10 years, 3 months ago](https://wordpress.org/support/topic/undefined-error-when-inserting-testimonial/#post-7078286) - [Ravi](https://wordpress.org/support/users/ravi17040/) * - [login page error in Chrome](https://wordpress.org/support/topic/login-page-error-in-chrome/) - Started by: [mpmckinney](https://wordpress.org/support/users/mpmckinney/) - 2 - 1 - [10 years, 7 months ago](https://wordpress.org/support/topic/login-page-error-in-chrome/#post-6716957) - [Matthew](https://wordpress.org/support/users/kidsguide/) * - [Huge number of 404's from users all with /undefined at end of url](https://wordpress.org/support/topic/huge-number-of-404s-from-users-all-with-undefined-at-end-of-url/) - Started by: [frankswp](https://wordpress.org/support/users/frankswp/) - 2 - 1 - [10 years, 7 months ago](https://wordpress.org/support/topic/huge-number-of-404s-from-users-all-with-undefined-at-end-of-url/#post-6677229) - [Dheeraj kumar](https://wordpress.org/support/users/dj1z/) * - [[User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration] keep getting a undefined error on user submit / and tool bar keeps disappearing](https://wordpress.org/support/topic/keep-getting-a-undefined-error-on-user-submit-and-tool-bar-keeps-disappearing/) - Started by: [dinkybluebug](https://wordpress.org/support/users/dinkybluebug/) - 1 - 0 - [10 years, 8 months ago](https://wordpress.org/support/topic/keep-getting-a-undefined-error-on-user-submit-and-tool-bar-keeps-disappearing/) - [dinkybluebug](https://wordpress.org/support/users/dinkybluebug/) * - [Reordering header elements with a child theme leads to undefined error](https://wordpress.org/support/topic/reordering-header-elements-with-a-child-theme-leads-to-undefined-error/) - Started by: [dimig](https://wordpress.org/support/users/dimig/) - 3 - 4 - [10 years, 8 months ago](https://wordpress.org/support/topic/reordering-header-elements-with-a-child-theme-leads-to-undefined-error/#post-6575815) - [dimig](https://wordpress.org/support/users/dimig/) * - [[Gallery by BestWebSoft - Customizable Image and Photo Galleries for WordPress] Undefined error when closing image](https://wordpress.org/support/topic/undefined-error-when-closing-image/) - Started by: [vascomorais](https://wordpress.org/support/users/vascomorais/) - 2 - 2 - [11 years, 8 months ago](https://wordpress.org/support/topic/undefined-error-when-closing-image/#post-5252898) - [bestwebsoft](https://wordpress.org/support/users/bestwebsoft/) *   1 [2](https://wordpress.org/support/topic-tag/undefined-error/page/2/?output_format=md) [→](https://wordpress.org/support/topic-tag/undefined-error/page/2/?output_format=md) ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics ## Feeds * [RSS Recent Posts](https://wordpress.org/support/forums/feed/) * [RSS Recent Topics](https://wordpress.org/support/topics/feed/)