License checkout failed.
License Manager Error -84
USER_BASED license has no specified users. 
Make sure the Options File exists and that the path to it is correctly listed in the DAEMON line of
the license file.

Troubleshoot this issue by visiting: 
https://www.mathworks.com/support/lme/R2018a/84

Diagnostic Information:
Feature: MATLAB 
License path: /home/griffin/.matlab/R2018a_licenses:/opt/matlab9.4/licenses/license.dat:/opt/matlab9.4/licenses/ne
twork.lic 
Licensing error: -84,147.