Warning: Unable to locate a personal folder for $documents\MATLAB

How can I fix the following error?

Warning: Unable to locate a personal folder for $documents\MATLAB

Thank you, Derrick

Answer 1

[Image Analyst]

Does it mean the userpath? Try this:

userpath(newpath)
savepath;

userpath(newpath) sets the primary userpath folder to newpath. The newpath folder appears at the top of the search path immediately and at startup in future sessions. MATLAB removes the folder previously specified by userpath from the search path.

[Derrick Early]

Thank you! This fix worked.

[Jonathan Gadiel Ramírez Martínez]

Hello, what do you mean by userpath?

[Image Analyst]

help userpath

 USERPATH User environment path.
    USERPATH returns a user-specific folder that MATLAB adds to the search path
    at startup, specified as a character vector.
 
    The default userpath is platform-specific:
      Windows: user's "Documents" folder appended with "MATLAB"
      Mac:     user's "Documents" folder ($home/Documents) appended with "MATLAB"
      Linux:   user's $home folder appended by "Documents" and "MATLAB"
               (if there is no $home/Documents directory, userpath will not be set)
 
    USERPATH(path) set the current value of userpath to the folder passed in.
    It updates the current MATLAB path, and this new userpath will persist
    across MATLAB sessions. 
 
    USERPATH('reset') resets the userpath to the default. It updates the current
    MATLAB path, and this new userpath will persist across MATLAB sessions. 
 
    USERPATH('clear') removes the userpath. It updates the current MATLAB path,
    and this new userpath will persist across MATLAB sessions.  
 
    Note that additional folders can be added to the top of the search path upon
    startup by specifying the path for the folders via the MATLABPATH environment
    variable.
 
    On Mac and Linux, if the directory $home/matlab exists, it will also be
    added to the search path after any folders specified via the MATLABPATH
    environment variable regardless of whether the MATLABPATH environment
    variable is set. (This is done for compatibility with earlier releases.)
 
    See also PATHDEF.

    Documentation for userpath
       doc userpath