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Upload of file .. was successful, but error occurred while setting the permissions and/or timestamp. If the problem persists, turn off setting permissions or preserving timestamp. Alternatively you can turn on ‘Ignore permission errors’ option.

Well, I have created a new user which when logging in through WinSCP to my server does it perfectly, the problem is in the part of making modifications to files within var/www/html, taking into account that directory has the privileges for others users have the privileges of 777 or rxw.