Summary: I logged in into the system successfully and try to register the course. However, the shell menu is crashed after I entered the register command. Steps to Reproduce: Step 1: Login to the system Step 2: enter reg command Actual Results: The error message is shown and the system throw JsonSyntaxEception. Expected Results: After enter the register command, the system will print out all the courses that can be registered.
The problem has been fixed.