Why won't MatLab open?

My iMac desktop is a stand alone, no one else touches it. I restarted the computer but still get the errro message. A couple of months ago I did upgrade to OS Mojave (10.14.2) and the first thing I did was make sure MAtlab still ran. It did. Then I used it quite a bit but not for the last 3 or 4 weeks. Today it won't open. I use MATLAB_R2013a_Student

[Rik]

closed as duplicate