Thank you very much for the quick support, the problem has been solved. It's indeed an environment issue and reason is the newest GCC version not support really well with NCSC. I can get the example running and will dig into it now. Thanks!
I just tried to run the example in the package, but there are a lot of link error, can't find "ml_uvm_pkg.sv", etc. Could you give me some help for that, after read whole documents and can't get the example run is really depressed.