Title: Script error (React) Last modified: November 9, 2022 --- # Script error (React) * Resolved [zitrusblau](https://wordpress.org/support/users/zitrusblau/) * (@zitrusblau) * [3 years, 5 months ago](https://wordpress.org/support/topic/script-error-react/) * Hey Hannes, * when visiting the plugin’s settings page, the following script errors are shown: * ``` Uncaught TypeError: R(...) is undefined B https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1 renderWithHooks https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:15015 mountIndeterminateComponent https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:17841 beginWork https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:19079 callCallback https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:3942 invokeGuardedCallbackDev https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:3991 invokeGuardedCallback https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:4053 beginWork$1 https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:23994 performUnitOfWork https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:22806 workLoopSync https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:22737 renderRootSync https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:22700 performSyncWorkOnRoot https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:22323 flushSyncCallbackQueueImpl https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:11357 unstable_runWithPriority https://my-site.loc/wp-includes/js/dist/vendor/react.js?ver=17.0.1:2764 runWithPriority$1 https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:11306 flushSyncCallbackQueueImpl https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:11352 flushSyncCallbackQueue https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:11339 scheduleUpdateOnFiber https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:21923 dispatchAction https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:16169 ue https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1 promise callback*666/ue/ https://my-site.loc/wp-includes/js/dist/vendor/react.js?ver=17.0.1:12 https://my-site.loc/wp-includes/js/dist/vendor/react.js?ver=17.0.1:13 index.js:1:35331 11:38:50.974 The above error occurred in the component: B@https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1:34355 div div v@https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1:6412 div div M@https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1:38007 div div TabPanel@https://my-site.loc/wp-includes/js/dist/components.js?ver=c22dbc95bc435f9eeee5:61619:7 ue@https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1:62845 g@https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1:1901 Consider adding an error boundary to your tree to customize error handling behavior. Visit https://reactjs.org/link/error-boundaries to learn more about error boundaries. react-dom.js:20115:17 11:38:50.977 Uncaught (in promise) TypeError: R(...) is undefined B https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1 renderWithHooks https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:15015 mountIndeterminateComponent https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:17841 beginWork https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:19079 callCallback https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:3942 invokeGuardedCallbackDev https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:3991 invokeGuardedCallback https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:4053 beginWork$1 https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:23994 performUnitOfWork https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:22806 workLoopSync https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:22737 renderRootSync https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:22700 performSyncWorkOnRoot https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:22323 flushSyncCallbackQueueImpl https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:11357 unstable_runWithPriority https://my-site.loc/wp-includes/js/dist/vendor/react.js?ver=17.0.1:2764 runWithPriority$1 https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:11306 flushSyncCallbackQueueImpl https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:11352 flushSyncCallbackQueue https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:11339 scheduleUpdateOnFiber https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:21923 dispatchAction https://my-site.loc/wp-includes/js/dist/vendor/react-dom.js?ver=17.0.1:16169 ue https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1 promise callback*666/ue/ https://my-site.loc/wp-includes/js/dist/vendor/react.js?ver=17.0.1:12 https://my-site.loc/wp-includes/js/dist/vendor/react.js?ver=17.0.1:13 index.js:1:35331 11:38:51.355 Warning: Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in a useEffect cleanup function. g@https://my-site.loc/wp-content/plugins/wp-html-mail/template-designer/build/index.js?ver=821ed061d9bbff0007fc:1:1901 ``` * We tested w/ PHP 7.4 and 8.0, WP 5.8/6.1 and default theme and no other plugins activated but the error persists. Sporadically, the settings page is fully shown but most of the time, we only see the top nav then empty space and below that the preview pane. The tabbed settings view might show up briefly but as soon as the JS error kicks in, the UI is broken/incomplete. * Hope you can help. We could provide a test login on demand. * Regards Viewing 1 replies (of 1 total) * Plugin Support [Julian](https://wordpress.org/support/users/juliangk/) * (@juliangk) * [3 years, 4 months ago](https://wordpress.org/support/topic/script-error-react/#post-16188374) * Hello [@zitrusblau](https://wordpress.org/support/users/zitrusblau/), * this error should be fixed with the next update. * Best regards Julian Viewing 1 replies (of 1 total) The topic ‘Script error (React)’ is closed to new replies. * ![](https://ps.w.org/wp-html-mail/assets/icon-256x256.png?rev=1730334) * [Email Template Designer - WP HTML Mail](https://wordpress.org/plugins/wp-html-mail/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-html-mail/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-html-mail/) * [Active Topics](https://wordpress.org/support/plugin/wp-html-mail/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-html-mail/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-html-mail/reviews/) * 1 reply * 2 participants * Last reply from: [Julian](https://wordpress.org/support/users/juliangk/) * Last activity: [3 years, 4 months ago](https://wordpress.org/support/topic/script-error-react/#post-16188374) * Status: resolved