The program couldn't create file or folder

[faridpr]

Hello Professor, Thank you for your great work I ran into a problem. When I click on the "Get Period" button, I get this error:

Error Identifier:   MATLAB:cd:NonExistentFolder
Error Message:      Unable to change current folder to 'D:\Users\Farid\Desktop\fm2D-example\Results' (Name is nonexistent or not a folder).
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Error Location:
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Line   98 in Get_Mass_and_Period
Line  433 in FM2D_App.GetperiodButtonPushed

Program runned as admin MATLAB Runtime version: R2022b