Command line programs (like composer) give the error "user is not authorized to access server"

You launch CLI programs (like composer) but when you try and run a command, the following error is given:

user is not authorized to access server

Cause and solution:

This problem occurs when the user running the command has a null password. Composer, and many of the other IBM Workload Scheduler CLI programs cannot run if the password is null.

Change the password of the user and retry the operation.