How can one effectively troubleshoot issues related to generating graphs using JPGraph in PHP?

Issue: If you are facing problems generating graphs using JPGraph in PHP, make sure to check if the necessary JPGraph library is properly included in your PHP script. Additionally, ensure that the data being passed to the graph functions is correctly formatted.

// Include the necessary JPGraph library
require_once ('jpgraph/jpgraph.php');
require_once ('jpgraph/jpgraph_line.php');

// Your PHP code for generating the graph goes here