cPanel Java issue - Server Management

Hello, We got a dedicated hosting client, they have an application that uses an exec() function in PHP to execute a Java command. It seems Java is not working correctly on our new cPanel Server. They can not contact the developer of the application, and the script just dont return any error. But, we have the exact line and file where the function is erroring. We have a previous server where it was working. We need you to fix this issue, and we need urgently. Thanks. PS: We will give root details to the winner. You must start working inmediately, while I sleep.