This error showed up recently after updating to WordPress 5.1.1. I’m not sure exactly when it started because we haven’t added an event for a few weeks. Sometime between early March and now.
Any ideas?
Fatal error: Uncaught Error: Class name must be a valid object or a string in /nas/content/live/rewindtech/wp-content/plugins/event-espresso-core-reg/core/EE_Config.core.php:435 Stack trace: #0 /nas/content/live/rewindtech/wp-content/plugins/event-espresso-core-reg/core/EE_Config.core.php(462): EE_Config->_reset_espresso_addon_config() #1 /nas/content/live/rewindtech/wp-content/plugins/event-espresso-core-reg/core/admin/PostShortcodeTracking.php(357): EE_Config->update_espresso_config() #2 /nas/content/live/rewindtech/wp-content/plugins/event-espresso-core-reg/core/admin/PostShortcodeTracking.php(146): EventEspresso\core\admin\PostShortcodeTracking::update_post_shortcodes(‘posts’) #3 [internal function]: EventEspresso\core\admin\PostShortcodeTracking::parse_post_content_on_save(1252, Object(WP_Post)) #4 /nas/content/live/rewindtech/wp-includes/class-wp-hook.php(288): call_user_func_array(Array, Array) #5 /nas/content/live/rewindtech/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #6 /nas/content/li in /nas/content/live/rewindtech/wp-content/plugins/event-espresso-core-reg/core/EE_Config.core.php on line 435
This just means you need to update your site to have the current version of Event Espresso 4. Version 4.9.36.p isn’t compatible with newer versions of PHP and newer versions of WordPress. Can you update to Event Espresso 4.9.79?
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