Subversion Repositories LCARS

Error running this command: svn --non-interactive --config-dir /tmp list --xml -r 55 'file:////home/mw3020/f001/svn/LCARS/trunk/tools/network/news/newsstat/po@7'
E195012: Unable to find repository location for 'file:///home/mw3020/f001/svn/LCARS/trunk/tools/network/news/newsstat/po' in revision 55