As I wanted to Upload a file larger than 10 MB I recognized that I have to increase the size limit for attachments.
I have changed the attachment size limit from the default 10 MB to 30 MB, by clicking settings --> system --> attachments --> change settings --> at size limit I entered 30000000 --> update
I also updated the webwork.multipath.maxSize property to 30000000 in the web.properties configuration file located at /opt/atlassian/jira/altassian-jira/WEB-INF/classes
Next I´ve tried it again and the same error message was displayed than before.
Then I have uploaded a file smaller 10 MB and it was successful. I´ve tried to upload another file larger than 10 MB but it also failed.