WordPress database error: [Duplicate key name 'subscriber_object_type_unique']
ALTER TABLE wp_fc_subscriber_pivot ADD UNIQUE KEY `subscriber_object_type_unique` (`subscriber_id`, `object_id`, `object_type`(50)), ALGORITHM=INPLACE, LOCK=NONE

WordPress database error: [Duplicate key name 'wp_fc_cam__updated_at']
ALTER TABLE wp_fc_campaign_emails ADD INDEX wp_fc_cam__updated_at (`updated_at`);

WordPress database error: [Duplicate key name 'wp_fc_cam_status_sc_at']
ALTER TABLE wp_fc_campaign_emails ADD INDEX `wp_fc_cam_status_sc_at` (`status`, `scheduled_at`);

WordPress database error: [Duplicate key name 'wp_fc_cam_cid_status']
ALTER TABLE wp_fc_campaign_emails ADD INDEX `wp_fc_cam_cid_status` (`campaign_id`, `status`);

WordPress database error: [Can't DROP INDEX `wp_fc_cam__estidx`; check that it exists]
ALTER TABLE wp_fc_campaign_emails DROP INDEX `wp_fc_cam__estidx`

WordPress database error: [Can't DROP INDEX `scheduled_at`; check that it exists]
ALTER TABLE wp_fc_campaign_emails DROP INDEX `scheduled_at`

WordPress database error: [Can't DROP INDEX `wp_fc_cam__cid_idx`; check that it exists]
ALTER TABLE wp_fc_campaign_emails DROP INDEX `wp_fc_cam__cid_idx`