Subversion Repositories WebE

Error running this command: svn --non-interactive --config-dir /tmp list --xml -r 38 'file:////home/mw3020/f001/svn/FFHS/WebE/trunk/src@15'
E195012: Unable to find repository location for 'file:///home/mw3020/f001/svn/FFHS/WebE/trunk/src' in revision 38