Title: Fatal error: Uncaught Error Last modified: September 23, 2020 --- # Fatal error: Uncaught Error * Resolved [lalwende](https://wordpress.org/support/users/lalwende/) * (@lalwende) * [5 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-48/) * Greetings, * I have installed the newest update to the plugin and I was suddenly greeted with this message: * Fatal error: Uncaught Error: Class ‘WP_Defender\Controller\Tutorial’ not found in /autoinstalator/wordpress/wp-content/plugins/defender-security/main-activator. php:238 Stack trace: #0 /autoinstalator/wordpress/wp-includes/class-wp-hook.php( 287): WD_Main_Activator->init(”) #1 /autoinstalator/wordpress/wp-includes/class- wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #2 /autoinstalator/wordpress/ wp-includes/plugin.php(478): WP_Hook->do_action(Array) #3 /autoinstalator/wordpress/ wp-settings.php(546): do_action(‘init’) #4 /autoinstalator/wordpress/wp-config. php(90): require_once(‘/autoinstalator…’) #5 /autoinstalator/wordpress/wp-load. php(37): require_once(‘/autoinstalator…’) #6 /autoinstalator/wordpress/wp-blog- header.php(13): require_once(‘/autoinstalator…’) #7 /autoinstalator/wordpress/ index.php(17): require(‘/autoinstalator…’) #8 {main} thrown in /autoinstalator/ wordpress/wp-content/plugins/defender-security/main-activator.php on line 238 * I am not very IT savvy so I just called up my hosting company and they deactivated the plugin. There is another issue with my domain and I have to register a new one but this happened before my domain expired. I just wanted to show you guys that there might be an issue with the newest update. I keep the plugin deactivated for now, as the site is not accessible right now anyway. * But is there a way to revert to an older version of this plugin? I don’t know when my site will be back online but I would like to have some sort of security when the time comes. * Regards, Lalwende Viewing 6 replies - 1 through 6 (of 6 total) * [david](https://wordpress.org/support/users/dskirk/) * (@dskirk) * [5 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-48/#post-13445636) * That happened to me too. I renamed it in FTP and was able to log in and delete the plugin and now site is working again. Same error message about tutorial. I hope we get a response soon. * [david](https://wordpress.org/support/users/dskirk/) * (@dskirk) * [5 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-48/#post-13448517) * I reinstalled – and disabled autoupdate – and maybe that fixes it. Otherwise, the plugin has been very reliable, so I’m guessing it may have succumbed to autoupdate. * Plugin Support [Patrick – WPMU DEV Support](https://wordpress.org/support/users/wpmudevsupport12/) * (@wpmudevsupport12) * [5 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-48/#post-13451466) * Hi [@lalwende](https://wordpress.org/support/users/lalwende/) * Sorry to hear you are having this problem. * Could you please try to reinstall the plugin and check if this makes any difference? * You can remove the disabled version, and then install it again from the WordPress > Plugins > Add New * I tested updating on my end but I couldn’t replicate the problem. * Hey [@dskirk](https://wordpress.org/support/users/dskirk/) * Can you confirm that the plugin is working now? * In case the problem persists, could you please create a new ticket and we can take a closer look. * Best Regards Patrick Freitas * [david](https://wordpress.org/support/users/dskirk/) * (@dskirk) * [5 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-48/#post-13453271) * Thanks for responding, Patrick. Yes, after reinstalling, everything is working fine. Defender is a great plugin and my guess is the autoupdate may have caused the issue. I don’t anticipate any problems, but if one emerges, I’ll open a new ticket. david * Plugin Support [Saurabh – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support7/) * (@wpmudev-support7) * [5 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-48/#post-13458392) * Hello [@dskirk](https://wordpress.org/support/users/dskirk/), * I’m glad to know that worked for you. Should you have any doubts or need any help, feel free to open a new thread and we would be happy to help. * Hello again [@lalwende](https://wordpress.org/support/users/lalwende/), * Did you try to install the plugin freshly? If yes, did that work for you. * Thank you, Prathamesh Palve * Plugin Support [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * (@wpmudev-support6) * [5 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-48/#post-13489299) * Hello [@lalwende](https://wordpress.org/support/users/lalwende/) * I’m closing this thread due to recent inactivity. Feel free to post back any updates and we can reopen it and carry on troubleshooting. * Take care, Dimitris Viewing 6 replies - 1 through 6 (of 6 total) The topic ‘Fatal error: Uncaught Error’ is closed to new replies. * ![](https://ps.w.org/defender-security/assets/icon-256x256.gif?rev=3435930) * [Defender Security - Malware Scanner, Login Security & Firewall](https://wordpress.org/plugins/defender-security/) * [Frequently Asked Questions](https://wordpress.org/plugins/defender-security/#faq) * [Support Threads](https://wordpress.org/support/plugin/defender-security/) * [Active Topics](https://wordpress.org/support/plugin/defender-security/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/defender-security/unresolved/) * [Reviews](https://wordpress.org/support/plugin/defender-security/reviews/) * 6 replies * 5 participants * Last reply from: [Dimitris – WPMU DEV Support](https://wordpress.org/support/users/wpmudev-support6/) * Last activity: [5 years, 8 months ago](https://wordpress.org/support/topic/fatal-error-uncaught-error-48/#post-13489299) * Status: resolved