PHP Error while activating the plugin

Hi,

When I want to activate the plugin, I get a PHP error as follows, Could you guess please.
I use DIVI5 theme. Thanks

Détails de l’erreur

Une erreur de type E_ERROR a été causée dans la ligne 44 du fichier /home/xxxxxxxx/yyyyyyyyyy/wp-content/plugins/email-subscribers/lite/includes/libraries/action-scheduler/classes/migration/ActionScheduler_DBStoreMigrator.php. Message d’erreur : Uncaught RuntimeException: Error saving action: Error saving action: Database error. in /home/xxxxxxxx/yyyyyyyyyy/wp-content/plugins/email-subscribers/lite/includes/libraries/action-scheduler/classes/migration/ActionScheduler_DBStoreMigrator.php:44
Stack trace: 0 /home/xxxxxxxx/yyyyyyyyyy/wp-content/plugins/email-subscribers/lite/includes/libraries/action-scheduler/classes/data-stores/ActionScheduler_HybridStore.php(242): ActionScheduler_DBStoreMigrator->save_action() 1 /home/xxxxxxxx/yyyyyyyyyy/wp-content/plugins/email-subscribers/lite/includes/libraries/action-scheduler/classes/ActionScheduler_ActionFactory.php(327): ActionScheduler_HybridStore->save_action() 2 /home/xxxxxxxx/yyyyyyyyyy/wp-content/plugins/email-subscribers/lite/includes/libraries/action-scheduler/classes/ActionScheduler_ActionFactory.php(315): ActionScheduler_ActionFactory->store() 3 /home/xxxxxxxx/yyyyyyyyyy/wp-content/plugins/email-subscribers/lite/includes/libraries/action-scheduler/functions.php(102): ActionScheduler_ActionFactory->create() 4 /home/xxxxxxxx/yyyyyyyyyy/wp-content/plugins/email-subscribers/lite/includes/libraries/action-scheduler/classes/migration/Scheduler.php(89): as_schedule_single_action() 5 /home/xxxxxxxx/yyyyyyyyyy/wp-content/plugins/email-subscribers/lite/includes/libraries/action-scheduler/classes/migration/Controller.php(119): Action_Scheduler\Migration\Scheduler->schedule_migration() 6 /home/xxxxxxxx/yyyyyyyyyy/wp-includes/class-wp-hook.php(341): Action_Scheduler\Migration\Controller->schedule_migration() 7 /home/xxxxxxxx/yyyyyyyyyy/wp-includes/class-wp-hook.php(365): WP_Hook->apply_filters() 8 /home/xxxxxxxx/yyyyyyyyyy/wp-includes/plugin.php(522): WP_Hook->do_action() 9 /home/xxxxxxxx/yyyyyyyyyy/wp-settings.php(793): do_action() 10 /home/xxxxxxxx/yyyyyyyyyy/wp-config.php(97): require_once(‘/home/xxxxxxxx/…’) 11 /home/xxxxxxxx/yyyyyyyyyy/wp-load.php(50): require_once(‘/home/xxxxxxxx/…’) 12 /home/xxxxxxxx/yyyyyyyyyy/wp-admin/admin.php(35): require_once(‘/home/xxxxxxxx/…’) 13 /home/xxxxxxxx/yyyyyyyyyy/wp-admin/plugins.php(10): require_once(‘/home/xxxxxxxx/…’) 14 {main}

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