Subversion Repositories navi

Error running this command: svn --non-interactive --config-dir /tmp log --xml --quiet -r 51:1 'file:////home/svn/navi/webapp/templates/parse.html@281' --limit 40
svn: E195012: Unable to find repository location for 'file:///home/svn/navi/webapp/templates/parse.html' in revision 51