Title: E_COMPILE_ERROR Last modified: August 24, 2023 --- # E_COMPILE_ERROR * Resolved [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/) * (@wiebkewetzel) * [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/) * Today the plugin crashed my website completely when I wanted to clear cache. Afterwards I got the white screen of death and http error 500. Luckily my webhoster could restore a backup of the site to a state that WordPress a fatal error which was caused by the plugin. Luckily I could start WordPress in recovery mode and delete the plugin. * This is the error message I received in the WordPress recovery email: * WordPress version 6.3 Active theme: Editor Blocks Child (version 1.0.1) Current plugin: WP Speed of Light (version 3.3.3) PHP version 7.4.33 * Error Details =============An error of type E_COMPILE_ERROR was caused in line 5 of the file /homepages/16/d691190147/htdocs/hipwf2/wp-content/plugins/wp-speed- of-light/vendor/composer/autoload_real.php. Error message: Cannot declare class ComposerAutoloaderInit141c0cb4ccc37f62f197e9d6000027fb, because the name is already in use Viewing 7 replies - 1 through 7 (of 7 total) * Plugin Author [JoomUnited](https://wordpress.org/support/users/joomunited/) * (@joomunited) * [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/#post-17003858) * Hi, * Thanks for your report, I share that with the dev team for investigation. * Cheers, * Thread Starter [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/) * (@wiebkewetzel) * [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/#post-17004433) * Thanks! I observed another issue: even though I deleted the plugin two pages of the website are still in server cache. Changes to the content are not displayed, e.g. if I add a new paragraph of text it will not be shown. Also, I have to do a rebranding and changed fonts (hosted locally). The fonts are updated on all other pages except for these two. Unfortunately, one of these two pages is the most important: the home page. * [link to a page with correct fonts](https://www.hipwf.com/hip-networking-brunch-2023/)( Syne and DM Sans) [link to a page with wrong fonts ](https://www.hipwf.com/)( Playfair Display and Open Sans) * I don’t dare to install the plugin again, even though it runs just fine on other websites I have. - This reply was modified 2 years, 9 months ago by [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/). * Thread Starter [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/) * (@wiebkewetzel) * [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/#post-17004466) * It is even worse, I just found out. Any changes on the website are visible on the frontend randomly. I do empty browser cache regularly when quitting the browser( which I do several times per day), thus it cannot be browser cache. Besides, I tested various browsers on various devices. * I will for now not proceed with the changes and hope that the issue will be solved soon. - This reply was modified 2 years, 9 months ago by [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/). * Thread Starter [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/) * (@wiebkewetzel) * [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/#post-17005395) * Hello, I solved the issue with the remainders of the cache by deleting the cache content with FTP access. The website works now as it should. * Thread Starter [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/) * (@wiebkewetzel) * [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/#post-17005416) * Its getting more and more mysterious. The plugin is deinstalled, not visible in the wordpress backend and by FTP access. But it does create a new server cache every time I open the website. And it does stubbornly prevent any content and layout changes to be visible. * This behaviour drives me crazy! I cannot delete server cache by FTP manually every time we change something on the website. - This reply was modified 2 years, 9 months ago by [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/). * [JoomUnited support](https://wordpress.org/support/users/viennguyen/) * (@viennguyen) * [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/#post-17005624) * Hi, I’m a developer of this plugin. * If you want to eliminate the cache function from this website, please follow these steps: 1. Open the file named wp-config.php. 2. If you find the line:`define( 'WP_CACHE', true); ` Modify it to: `define( 'WP_CACHE', false); `Or you can simply remove the line. 3. Next, locate the file named advanced-cache.php in the /wp-content/ directory. 4. If this file exists, you can safely delete it since you’re not using the cache function. * I hope this information proves helpful to you! * Thread Starter [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/) * (@wiebkewetzel) * [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/#post-17005837) * Hello, thanks for your fast reply. With your instructions all problems are solved and cache is disabled. Best wishes, Wiebke Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘E_COMPILE_ERROR’ is closed to new replies. * ![](https://ps.w.org/wp-speed-of-light/assets/icon-256x256.png?rev=1900554) * [WP Speed of Light](https://wordpress.org/plugins/wp-speed-of-light/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-speed-of-light/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-speed-of-light/) * [Active Topics](https://wordpress.org/support/plugin/wp-speed-of-light/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-speed-of-light/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-speed-of-light/reviews/) ## Tags * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/) * 7 replies * 3 participants * Last reply from: [wiebke.wetzel](https://wordpress.org/support/users/wiebkewetzel/) * Last activity: [2 years, 9 months ago](https://wordpress.org/support/topic/e_compile_error-50/#post-17005837) * Status: resolved