Hi Leonard,

To implement server-side ajax datatable you will need to learn the datatable ajax features by referring to the official docs:
https://datatables.net/manual/server-side

Our example uses our demo PHP code which generates the datatable data following the Datatable documentation.
In order to implement on your end you will need to properly generate the data at your server side code.

I would suggest you to implement very basic datatable with backend code and you can customize it further once you get it working.
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Regards