Subversion Repositories shark

Error running this command: /usr/local/bin/svn --non-interactive --config-dir /tmp list --xml -r 1476 'file:///home/shark/svn/demos/tags/rel_1_4_rc1@1393'
E195012: Unable to find repository location for 'file:///home/shark/svn/demos/tags/rel_1_4_rc1' in revision 1476