Plot function cannot work normally

As shown in the upload figure，when I used the plot function, I encountered an unusual bug. How can I solve this problem? Thanks~~

[Walter Roberson]

What shows up for

which -all gobjects

If it is something like toolbox/matlab/graphics/objectsystem/gobjects.m only, then you may need to reinstall MATLAB unless you can restore the file to its original version (such as if you have system backups.)

[LIU Tao]

I have not changed the file: gobjects.m. I want to know the reason for this problem, so that I can avoid it in future use.

>> which -all gobjects
E:\MATLAB Inc\MATLAB 2018B\toolbox\matlab\graphics\gobjects.m

Answer 1

[Walter Roberson]

Your file E:\MATLAB Inc\MATLAB 2018B\toolbox\matlab\graphics\gobjects.m is corrupt. You will need to restore it from backup (if you have backup) or reinstall MATLAB

[LIU Tao]

Ok~~Thank you~~