Title: Fatal Error thrown Last modified: April 1, 2022 --- # Fatal Error thrown * Resolved [gutding](https://wordpress.org/support/users/gutding/) * (@gutding) * [4 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-thrown/) * Hi there, * I don’t know if it is of any relevance, but my log showed me a fatal error today: * ``` Fatal error: Uncaught Error: Class 'MailPoetVendor\Monolog\Handler\Handler' not found in /wp-content/plugins/mailpoet/vendor-prefixed/monolog/monolog/src/Monolog/Handler/AbstractHandler.php:8 Timestamp: 2022-03-31 13:33:50 UTC Stack Trace ----------- 1. {anonymous}() /wp-content/plugins/mailpoet/vendor-prefixed/monolog/monolog/src/Monolog/Handler/AbstractHandler.php:8 2. include() /wp-content/plugins/backupbuddy/vendor/composer/ClassLoader.php:440 3. Composer\Autoload\includeFile('/home/www/MYSITE/wp-c...') /wp-content/plugins/backupbuddy/vendor/composer/ClassLoader.php:322 4. Composer\Autoload\ClassLoader->loadClass('MailPoetVendor\Monolog...') 5. spl_autoload_call('MailPoetVendor\Monolog...') /wp-content/plugins/mailpoet/vendor-prefixed/monolog/monolog/src/Monolog/Handler/AbstractProcessingHandler.php:5 6. include('/home/www/MYSITE/wp-c...') /wp-content/plugins/backupbuddy/vendor/composer/ClassLoader.php:440 7. Composer\Autoload\includeFile('/home/www/MYSITE/wp-c...') /wp-content/plugins/backupbuddy/vendor/composer/ClassLoader.php:322 8. Composer\Autoload\ClassLoader->loadClass('MailPoetVendor\Monolog...') 9. spl_autoload_call('MailPoetVendor\Monolog...') /wp-content/plugins/mailpoet/lib/Logging/LogHandler.php:13 10. include('/home/www/MYSITE/wp-c...') /wp-content/plugins/backupbuddy/vendor/composer/ClassLoader.php:440 11. Composer\Autoload\includeFile('/home/www/MYSITE/wp-c...') /wp-content/plugins/backupbuddy/vendor/composer/ClassLoader.php:322 12. Composer\Autoload\ClassLoader->loadClass('MailPoet\Logging\LogHa...') 13. spl_autoload_call('MailPoet\Logging\LogHa...') /wp-content/plugins/mailpoet/lib/Logging/LoggerFactory.php:87 14. MailPoet\Logging\LoggerFactory->getLogger('post-notifications') /wp-content/plugins/mailpoet/lib/Newsletter/Scheduler/PostNotificationScheduler.php:60 15. MailPoet\Newsletter\Scheduler\PostNotificationScheduler->transitionHook('log_emails_log', 'new', WP_Post) /wp-includes/class-wp-hook.php:307 16. WP_Hook->apply_filters(null, Array(3)) /wp-includes/class-wp-hook.php:331 17. WP_Hook->do_action(Array(3)) /wp-includes/plugin.php:474 18. do_action('transition_post_status', 'log_emails_log', 'new', WP_Post) /wp-includes/post.php:5317 19. wp_transition_post_status('log_emails_log', 'new', WP_Post) /wp-includes/post.php:4577 20. wp_insert_post(Array(21)) /wp-content/plugins/log-emails/includes/class.LogEmailsPostTypeLog.php:475 21. LogEmailsPostTypeLog::createLog('[MYSITE] Einige Plugi...', ' phpmailerInit(WPMailSMTP\MailCatcherV6) /wp-includes/class-wp-hook.php:307 23. WP_Hook->apply_filters(null, Array(1)) /wp-includes/class-wp-hook.php:331 24. WP_Hook->do_action(Array(1)) /wp-includes/plugin.php:522 25. do_action_ref_array('phpmailer_init', Array(1)) /wp-includes/pluggable.php:538 26. wp_mail(Array(1), '[MYSITE] Einige Plugi...', ' send_plugin_theme_email('success', Array(1), Array(0)) /wp-admin/includes/class-wp-automatic-updater.php:975 28. WP_Automatic_Updater->after_plugin_theme_update(Array(1)) /wp-admin/includes/class-wp-automatic-updater.php:547 29. WP_Automatic_Updater->run() /wp-includes/update.php:729 30. wp_maybe_auto_update('') /wp-includes/class-wp-hook.php:307 31. WP_Hook->apply_filters(null, Array(1)) /wp-includes/class-wp-hook.php:331 32. WP_Hook->do_action(Array(1)) /wp-includes/plugin.php:474 33. do_action('wp_maybe_auto_update') /wp-includes/update.php:256 34. wp_version_check() /wp-includes/class-wp-hook.php:307 35. WP_Hook->apply_filters(null, Array(0)) /wp-includes/class-wp-hook.php:331 36. WP_Hook->do_action(Array(0)) /wp-includes/plugin.php:522 37. do_action_ref_array('wp_version_check', Array(0)) /wp-cron.php:138 Context ------- URL : /wp-cron.php?doing_wp_cron=1648733607.6865799427032470703125 Referer : https://mysite.de/wp-cron.php?doing_wp_cron=1648733607.6865799427032470703125 HTTP Method : POST HTTP Host : mysite.de HTTP Status : 200 isSSL : Yes Current Filter : wp_version_check, wp_maybe_auto_update, phpmailer_init, transition_post_status Execution Time : 22.877 s Memory Usage : 154.47 MiB PHP SAPI : apache2handler ``` * I’m using MailPoet Version 3.85.1 / Premium 3.85.0 I never had this error before, so maybe it is related to the latest update or some new inconsistencies with other plugins. * Thank you, Rado Viewing 2 replies - 1 through 2 (of 2 total) * Plugin Support [Gui A. a11n](https://wordpress.org/support/users/guicmazeredo/) * (@guicmazeredo) * [4 years, 1 month ago](https://wordpress.org/support/topic/fatal-error-thrown/#post-15521936) * Hi there [@gutding](https://wordpress.org/support/users/gutding/), * Thanks for reaching out! * This error indicates that there is a class missing in your installation. * Could you please follow the instructions to [re-install the plugin via FTP](https://kb.mailpoet.com/article/258-re-installing-updating-the-plugin-via-ftp) and let me know if it works? * Don’t worry, you won’t lose any data from the plugin. * [Elvira K.](https://wordpress.org/support/users/treibalen/) * (@treibalen) * [4 years ago](https://wordpress.org/support/topic/fatal-error-thrown/#post-15591492) * Hi there [@gutding](https://wordpress.org/support/users/gutding/), * We haven’t heard back from you in a while, so I’m going to mark this as resolved– we’ll be here if and/or when you are ready to continue. Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘Fatal Error thrown’ is closed to new replies. * ![](https://ps.w.org/mailpoet/assets/icon-256x256.png?rev=3284564) * [MailPoet - Newsletters, Email Marketing, and Automation](https://wordpress.org/plugins/mailpoet/) * [Frequently Asked Questions](https://wordpress.org/plugins/mailpoet/#faq) * [Support Threads](https://wordpress.org/support/plugin/mailpoet/) * [Active Topics](https://wordpress.org/support/plugin/mailpoet/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/mailpoet/unresolved/) * [Reviews](https://wordpress.org/support/plugin/mailpoet/reviews/) ## Tags * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/) * 2 replies * 3 participants * Last reply from: [Elvira K.](https://wordpress.org/support/users/treibalen/) * Last activity: [4 years ago](https://wordpress.org/support/topic/fatal-error-thrown/#post-15591492) * Status: resolved