Title: Fatal error: Class 'Symfony\Component\ClassLoader\… Last modified: August 21, 2016 --- # Fatal error: Class 'Symfony\Component\ClassLoader\… * Resolved [Scalary](https://wordpress.org/support/users/scalary/) * (@scalary) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/) * After updating to Version 3.0.8 I get following Error nearly everywhere in my Backend – e.g when I try to add a category or under “WordPress Latest News” at the Dashboard: * `Fatal error: Class 'Symfony\Component\ClassLoader\UniversalClassLoader' not found in /*******/wp-content/plugins/backwpup/inc/class-destination-s3.php on line 7` * PHP Version: PHP Version 5.3.10 * [http://wordpress.org/extend/plugins/backwpup/](http://wordpress.org/extend/plugins/backwpup/) Viewing 13 replies - 1 through 13 (of 13 total) * Plugin Contributor [Daniel Hüsken](https://wordpress.org/support/users/danielhuesken/) * (@danielhuesken) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674385) * Hello, * – there is no change for that in this version. – I check for the existing class and load the class file if not exists. Before i call it. * Can you try to reinstall the plugin. * Thread Starter [Scalary](https://wordpress.org/support/users/scalary/) * (@scalary) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674388) * I removed it, but when I try to reinstall it I get following error: * ``` Runterladen des Installationspakets von http://downloads.wordpress.org/plugin/backwpup.3.0.8.zip… Entpacken des Pakets… Das Plugin wird installiert… Verzeichnis konnte nicht angelegt werden. /xxxx/wp-content/plugins/backwpup/sdk/Aws_v1/utilities Die Plugininstallation ist fehlgeschlagen. ``` * Nearly same problem like here: [http://wordpress.org/support/topic/problem-with-update-2?replies=1](http://wordpress.org/support/topic/problem-with-update-2?replies=1) * Greets * [RobertoMejia](https://wordpress.org/support/users/robertomejia/) * (@robertomejia) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674411) * I am having the exact same error, except mine was a fresh BackWPup installed today on WP 3.5.1. Here are the error messages I am getting. * ``` Warning: include(/{home path}/wp-content/plugins/backwpup/inc/../sdk/Aws/Symfony/Component/ClassLoader/UniversalClassLoader.php): failed to open stream: No such file or directory in /{home path}/wp-content/plugins/backwpup/inc/class-destination-s3.php on line 6 Warning: include(): Failed opening '/{home path}/wp-content/plugins/backwpup/inc/../sdk/Aws/Symfony/Component/ClassLoader/UniversalClassLoader.php' for inclusion (include_path='.:/usr/lib/php6') in /{home path}/wp-content/plugins/backwpup/inc/class-destination-s3.php on line 6 Fatal error: Class 'Symfony\Component\ClassLoader\UniversalClassLoader' not found in /{home path}/wp-content/plugins/backwpup/inc/class-destination-s3.php on line 7 ``` * I tried uninstall and reinstall, and it did not work. Please help. * [dalberts69](https://wordpress.org/support/users/dalberts69/) * (@dalberts69) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674412) * Fixed here by capitalizing the directory * wp-content/plugins/backwpup/sdk/Aws/symfony * to * wp-content/plugins/backwpup/sdk/Aws/Symfony * [mbrsolution](https://wordpress.org/support/users/mbrsolution/) * (@mbrsolution) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674413) * Hi [@robertomejia](https://wordpress.org/support/users/robertomejia/) read this [support thread](http://wordpress.org/support/topic/fatal-error-symfony-is-not-symfony?replies=1). I am sure this will fix your issue. * Kind regards * [Marcelo Pedra](https://wordpress.org/support/users/kent-brockman/) * (@kent-brockman) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674414) * Hi! I have it too. When opening a job to edit, the page outputs this: * ``` Warning: include(/home/tureslr/public_html/wp-content/plugins/backwpup/inc/../sdk/Aws/Symfony/Component/ClassLoader/UniversalClassLoader.php): failed to open stream: No such file or directory in /home/tureslr/public_html/wp-content/plugins/backwpup/inc/class-destination-s3.php on line 6 Warning: include(): Failed opening '/home/tureslr/public_html/wp-content/plugins/backwpup/inc/../sdk/Aws/Symfony/Component/ClassLoader/UniversalClassLoader.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/tureslr/public_html/wp-content/plugins/backwpup/inc/class-destination-s3.php on line 6 Fatal error: Class 'Symfony\Component\ClassLoader\UniversalClassLoader' not found in /home/tureslr/public_html/wp-content/plugins/backwpup/inc/class-destination-s3.php on line 7 ``` * I’m testing in two servers with WP 3.5.1: The plugin is working well under PHP 5.2.17 but this error comes up under PHP 5.4.14. The error is happening in both individual and multisites environments. * Fix please. * [Marcelo Pedra](https://wordpress.org/support/users/kent-brockman/) * (@kent-brockman) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674415) * Hi, I found a solution: [http://wordpress.org/support/topic/error-after-installing-the-backwpup-update?replies=7](http://wordpress.org/support/topic/error-after-installing-the-backwpup-update?replies=7) * Rename the backwpup/sdk/Aws/symfony dir to Symfony. * [mbrsolution](https://wordpress.org/support/users/mbrsolution/) * (@mbrsolution) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674416) * Hello [@marcelo](https://wordpress.org/support/users/marcelo/) Pedra, please check the link I provided above. It will fix your issue. * Kind regards * [Marcelo Pedra](https://wordpress.org/support/users/kent-brockman/) * (@kent-brockman) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674417) * hehe posted at the same time. Now it’s up to Daniel Huesken to update quickly to fix this. Fortunately it’s nothing too complicated. * [mbrsolution](https://wordpress.org/support/users/mbrsolution/) * (@mbrsolution) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674418) * Yes that is correct, it is a simple typo error. I am sure Daniel will add a fix quickly. I have a feeling that this could the update that puts BackWPup back in the good books for many users 🙂 * Kind regards * [RobertoMejia](https://wordpress.org/support/users/robertomejia/) * (@robertomejia) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674420) * [@mbrsolution](https://wordpress.org/support/users/mbrsolution/) Thanks a bunch. I did a search before posting, and didn’t find that. * [Caspar](https://wordpress.org/support/users/friendlyghost/) * (@friendlyghost) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674421) * [Issue](http://wordpress.org/support/topic/dev-notice-why-backwpup-309-caused-a-fatal-error-please-use-3010) has been fixed, please update to 3.0.10. * [Marcelo Pedra](https://wordpress.org/support/users/kent-brockman/) * (@kent-brockman) * [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674422) * It’s ok now! Thanks! Viewing 13 replies - 1 through 13 (of 13 total) The topic ‘Fatal error: Class 'Symfony\Component\ClassLoader\…’ is closed to new replies. * ![](https://ps.w.org/backwpup/assets/icon-256x256.png?rev=3236141) * [BackWPup – WordPress Backup & Restore Plugin](https://wordpress.org/plugins/backwpup/) * [Support Threads](https://wordpress.org/support/plugin/backwpup/) * [Active Topics](https://wordpress.org/support/plugin/backwpup/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/backwpup/unresolved/) * [Reviews](https://wordpress.org/support/plugin/backwpup/reviews/) * 13 replies * 7 participants * Last reply from: [Marcelo Pedra](https://wordpress.org/support/users/kent-brockman/) * Last activity: [13 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-class-symfonycomponentclassloader/#post-3674422) * Status: resolved