Doubt regarding import gds in encounter

 Is there any option to import standard cell gds in encounter? I tried to include the standard cell gds in .conf file as follows.

 set rda_Input(ui_gds_file) "/export/projects/pnr_calibration/inputs/tcbn40lpbwp.gds"

But it shows error like,

Loading GDS File ./inputs/tcbn40lpbwp.gds
**ERROR: (ENCSYT-16029):    Failed to load gds file ./inputs/tcbn40lpbwp.gds.

If anybody knows how to resolve this problem, kindly reply me. Thanks in advance.