Hello Ahmad Bilal,
I see that you are facing Licence Manager Error while working on MATLAB.
Please note that, this means that all the keys for a particular product have been checked out from your license server. You will not be able to access a license for the product until another user has returned the license back to the pool.
Please refer to the following MATLAB Answers link answer where MATLAB Support Team describes how to resolve this error:
I hope it helps!