Why do I get the error "The system cannot find the path specified" when starting MATLAB Parallel Server?

I am trying to start the MATLAB Parallel Server and I get the following error when I run "mjs install" or "mjs start":

ERROR: The system cannot find the path specified.
Script mjs unable to complete successfully - exiting

Answer 1

[MathWorks Support Team]

This error indicates that you have installed the Parallel Computing Toolbox, but have not installed the MATLAB Parallel Server. MATLAB Parallel Server products use a separate license and installation key.

To resolve this error, install the MATLAB Parallel Server, then run "mjs install" or "mjs start" again.

NOTE: Starting in R2019b the following name changes occurred:

•     MATLAB Distributed Computing Server was renamed to MATLAB Parallel Server
•     mdce_def was renamed to mjs_def
•     mdce binary was renamed to mjs
•     mjs scripts are in $MATLAB/R20XXx/toolbox/distcomp/bin for R2019a and earlier