Uncaught Error class definition “ActionScheduler_SimpleSchedule”

I got this error when running a search and replace after cloning a website. I have done that hundreds of times before and it was never a problem. Any ideas?

An error of type E_ERROR was caused on line number 355 of the file /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php. Error message: Uncaught Error: The script tried to modify a property on an incomplete object. Please ensure that the class definition “ActionScheduler_SimpleSchedule” of the object you are trying to operate on was loaded before unserialize() gets called or provide an autoloader to load the class definition in /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php:355
Stack trace: 0 /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php(341): Inpsyde\SearchReplace\Database\Replace->recursive_unserialize_replace() 1 /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php(222): Inpsyde\SearchReplace\Database\Replace->recursive_unserialize_replace() 2 /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Database/Replace.php(93): Inpsyde\SearchReplace\Database\Replace->replace_values() 3 /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Page/SearchReplace.php(214): Inpsyde\SearchReplace\Database\Replace->run_search_replace() 4 /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Page/SearchReplace.php(144): Inpsyde\SearchReplace\Page\SearchReplace->run_replace() 5 /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Page/Manager.php(50): Inpsyde\SearchReplace\Page\SearchReplace->save() 6 /home/MyDomain/public_html/wp-content/plugins/search-and-replace/inc/Page/Manager.php(125): Inpsyde\SearchReplace\Page\Manager->save() 7 /home/MyDomain/public_html/wp-includes/class-wp-hook.php(324): Inpsyde\SearchReplace\Page\Manager->render() 8 /home/MyDomain/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 9 /home/MyDomain/public_html/wp-includes/plugin.php(517): WP_Hook->do_action() 10 /home/MyDomain/public_html/wp-admin/admin.php(259): do_action() 11 /home/MyDomain/public_html/wp-admin/tools.php(40): require_once(‘/home/MyDomain…’) 12 {main} thrown

• This topic was modified 12 months ago by John-Pierre Cornelissen.