Title: React application is not working Last modified: April 10, 2023 --- # React application is not working * Resolved [mythily](https://wordpress.org/support/users/mythily/) * (@mythily) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/) * React application is not working, was getting the black screens sometime, in wordpress site Viewing 13 replies - 1 through 13 (of 13 total) * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16641384) * First and foremost try to identify what is breaking things by just disabling CSS or JS or HTML or Image optimization (incl. lazyload). Based on that we can see what the next steps need to be 🙂 * frank * Thread Starter [mythily](https://wordpress.org/support/users/mythily/) * (@mythily) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16641588) * Hi, * Please check the below error screenshots * ![](https://i0.wp.com/qaevaaa.wpengine.com/wp-content/uploads/2023/04/csss.png? ssl=1) * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16641694) * so have you tried disabling JS optimization? does that fix the problem? * Thread Starter [mythily](https://wordpress.org/support/users/mythily/) * (@mythily) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16643683) * Yes I did the same but same result. But we need to optimize JS also right for better performance. Please check the below attachment * ![](https://i0.wp.com/devevaaa.wpengine.com/wp-content/uploads/2023/04/MicrosoftTeams- image-1.png?ssl=1) * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16643701) * > But we need to optimize JS also right for better performance. * well, we’re troubleshooting now, and disabling JS opt. is but a first step 🙂 * > Yes I did the same but same result * “same result” meaning the react app is still broken even when JS optimization is off? do you also get JS errors in that case? * Thread Starter [mythily](https://wordpress.org/support/users/mythily/) * (@mythily) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16644521) * sometimes we are getting the above errors, so at that time we need to disable that option? * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16644549) * As I see a lot of JS errors even now, with Autoptimize not active, I’m afraid changing AO settings will not help mythily .. :-/ * ![](https://i0.wp.com/i.imgur.com/p1OfLHt.jpg?ssl=1) * Thread Starter [mythily](https://wordpress.org/support/users/mythily/) * (@mythily) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16650824) * Hi, * But in mac system we are getting the below errors, Please check once * Link: * ![](https://i0.wp.com/devevaaa.wpengine.com/wp-content/uploads/2023/04/Screenshot- 2023-04-13-at-11.46.33-AM.png?ssl=1) * ![](https://i0.wp.com/devevaaa.wpengine.com/wp-content/uploads/2023/04/Screenshot- 2023-04-13-at-11.46.27-AM.png?ssl=1) * ![](https://i0.wp.com/devevaaa.wpengine.com/wp-content/uploads/2023/04/Screenshot- 2023-04-13-at-11.42.09-AM.png?ssl=1) * Thread Starter [mythily](https://wordpress.org/support/users/mythily/) * (@mythily) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16650831) * Now getting in windows also * Thread Starter [mythily](https://wordpress.org/support/users/mythily/) * (@mythily) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16650837) * So the react script files are not loading sometimes prorperly * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16650907) * I only see two files that were not loading, in the first screenshot, both Elementor( non-autoptimized), all the other log entries are warnings from React and are also there when AO is not active .. * Thread Starter [mythily](https://wordpress.org/support/users/mythily/) * (@mythily) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16651690) * So the cache it using for , will it update automatically when we do any changes to that file, Or do we need it to do manually * Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * (@optimizingmatters) * [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16651724) * the cached optimized JS (or CSS) will update automatically when changes are made( the cache filename contains the md5-hash of the content of the unoptimized file( s), so if the file changes the hash changes and the old cached JS/ CSS is not used any more). Viewing 13 replies - 1 through 13 (of 13 total) The topic ‘React application is not working’ is closed to new replies. * ![](https://ps.w.org/autoptimize/assets/icon-256X256.png?rev=2211608) * [Autoptimize](https://wordpress.org/plugins/autoptimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/autoptimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/autoptimize/) * [Active Topics](https://wordpress.org/support/plugin/autoptimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/autoptimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/autoptimize/reviews/) * 13 replies * 2 participants * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/) * Last activity: [3 years, 1 month ago](https://wordpress.org/support/topic/react-application-is-not-working/#post-16651724) * Status: resolved