Error Message

I am getting the following error message in my logs. Also, I noticed I am able to edit status in bulk and quick edit but not in the inline editor of Admin Columns plugin. Neither of these are big issues, just wanted to make you aware of them. Thanks

Deprecated: unserialize(): Passing null to parameter #1 ($data)?of type string is deprecated in?/wp-content/plugins/hw-wp-status-manager/index.php on line 561