There are many different possibilities. If you have a problem, misconfiguration, or syntax error in your script, you will probably be able to find it by checking your error logs which can be found in your control panel cPanel under “Statistics > METRICS > Errors“.
Although this is generally caused by a problem within the script, many times it is caused by incorrect file permissions either on the script itself, or another file or directory used by the script. You should also verify that the script paths are set correctly.