added exception checker for get_model to return URI when the label cannot be loaded
added exception checker for get_model to return URI when the label cannot be loaded

ewg118/eaditor,ewg118/eaditor,SENYLRC/Eaditor-for-EmpireADC,SENYLRC/Eaditor-for-EmpireADC,SENYLRC/Eaditor-for-EmpireADC,ewg118/eaditor,SENYLRC/Eaditor-for-EmpireADC