Content is not allowed in prolog.

When I open the Matlab2022a, it shows the error:

Content is not allowed in prolog.

Could not parse the file: f:\matlab\r2022a\toolbox\ident\ident\info.xml

Unable to load signatures for 'plot'. Failed to parse JSON file 'F:\MATLAB\R2022a\toolbox\ident\ident\resources\liveTasks.json': <unspecified file>(1): expected value

Unable to load signatures for 'plot'. Failed to parse JSON file 'F:\MATLAB\R2022a\toolbox\ident\ident\resources\functionSignatures.json': <unspecified file>(1): expected value

When I change the text content in the editor, for example the alpha in xlabel('\alpha'), it shows the error:

Unable to load signatures for 'plot'. Failed to parse JSON file 'F:\MATLAB\R2022a\toolbox\ident\ident\resources\liveTasks.json': <unspecified file>(1): expected value

Unable to load signatures for 'size'. Failed to parse JSON file 'F:\MATLAB\R2022a\toolbox\ident\ident\resources\liveTasks.json': <unspecified file>(1): expected value

Unable to load signatures for 'numel'. Failed to parse JSON file 'F:\MATLAB\R2022a\toolbox\ident\ident\resources\liveTasks.json': <unspecified file>(1): expected value

How can I solve this problem ?

[Walter Roberson]

reinstall Systems Identification Toolbox