Error -9,57 in OS Ubuntu 20.04LTS

Hi there, I'm a latin speaker so I'll try to describe my problem as well as posible.

I've been trying to install Matlab for a week, but every time I wante to run the aplication with te code

sudo ./matlab
MATLAB is selecting SOFTWARE OPENGL rendering.
License checkout failed.
License Manager Error -9
Your username does not match the username in the license file. 
To run on this computer, you must run the Activation client to reactivate your license.

Troubleshoot this issue by visiting: 
https://www.mathworks.com/support/lme/R2020b/9

Diagnostic Information:
Feature: MATLAB 
License path: /root/.matlab/R2020b_licenses:/usr/local/MATLAB/R2020b/licenses/license.dat:/usr/local/MATLAB/R2020b
/licenses/license_jair-desktop_40513311_R2020b.lic 
Licensing error: -9,57.

in the folder /usr/local/MATLAB/R2020b/bin.

I've try to revalid the licence (succesfuly) with this code in the same folder.

sudo ./activate_matlab.sh

But still not working, can anyone help me with this problem.

[Tarun pulluri]

Same problem

Answer 1

[Yukta Maurya]

You can check this link https://www.mathworks.com/matlabcentral/answers/99067-why-do-i-receive-license-manager-error-9?s_tid=srchtitle

Answer 2

[Walter Roberson]

You cannot run MATLAB sudo unless you activated it against account "root". The effective uid is used in the authentication.