I don't know if you have entered the FTP server, or if you have made any changes or modifications to my installation. Be that as it may, it occurred to me to reinstall the application again, to see if the error was corrected, and now I can verify that, indeed, the application works fine again.
I also found that the error occurred only in Firefox.
For some reason that I don't know, I suppose that some file must have been corrupted, so that it has been generating these errors, but anyway, it seems that it has been solved by reinstalling the application again.
I am sorry to have made you spend your time with me, and I thank you very much for your interest and kindness.
Best regards