I am using SAS Viya 3.5 on Windows. Cannot run this code as suggested in your blog
cas mysession ;
PROC CASUTIL;
LOAD DATA=sashelp.cars OUTcaslib='cars' replace;
list tables;
RUN;
caslib _all_ list;
cas mysession listabout;
cas mysession disconnect;
cas mysession terminate;

The error is
"ERROR : the caslib 'cars' does not exist in this session.
ERROR The action stopped due to errors