How to implement Server Side DataTable in CI4

Try to remove the (:any) from the routing statement

Code:

$routes->add('/product-code/showProductCodes(:any)', 'Code8ProductCode::showProductCodes');

change to:

Code:

$routes->add('/product-code/showProductCodes', 'Code8ProductCode::showProductCodes');

Also I noticed that there is no / before the (:any), so to my understanding that url can be anything as long as it start with "showProductCodes".

Try wiht POST and GET un routes:

Code:

$routes->get('/product-code/showProductCodes(:any)', 'Code8ProductCode::showProductCodes');

change to:

Code:

$routes->post('/product-code/showProductCodes', 'Code8ProductCode::showProductCodes');