Connecting WPDataTable to Seralized PHP Array

Hello,

I am attempting to connect a WP Data Table with the data source being a Serialized PHP Array. However, the URL I am using keeps getting the following error message:

Error
Table in data source has no rows.

I am using a XYZ PHP Code plugin to write a short code snippet instead of creating a PHP file in the root directory since it will be much easier to manage. I’m unsure if the URL I’m using is incorrect or if it’s a plugin issue. Is there a specific PHP plugin you guys recommend I use in tandem with your plugin? Or any other suggestions?