SAS Programming 1: Essentials error

[Reeza]

Are you using SAS On Demand or your own version of EG? If you're using your own it's likely you don't have the most up to date version and no license for the XLSX module. What is your version of SAS? And components?
You can view them with the following (results in the log):

*what is licensed;
proc setinit;run;

*what is installed;
proc product_status;run;