Liberate error ERROR (LIB-465)

I've tried to execute a tcl scrpit using command line of Liberate, and it show this error.

My code is :

exec mkdir -p ${rundir}/LDB
exec mkdir -p ${rundir}/LIBRARY
exec mkdir -p ${rundir}/DATASHEET

### Define temperature and default voltage ###
set_vdd vdd 0.65
set_gnd gnd 0
set_operating_condition -voltage 0.65 -temp 27 -supply_name vdd

## Load template information for each cell ##
source ${rundir}/TEMPLATE/template.tcl

## Load spice models ##

# Command and options to call the external SPICE simulator
set_var extsim_cmd spectre
# Option to be passed to SPICE simulator
set_var extsim_cmd_option "+spice"
# Option to be used during characterization
set_var extsim_option "runlvl=5"
set_var extsim_leakage_option "gmindc=1e-14 pivtol=1e-15"
#set_var extsim_save_failed all

set_var reset_negative_power 1

set_var extsim_deck_header ".hdl $rundir/MODELS/nGAAFET/bsimcmg_nmos.va\n.hdl $rundir/MODELS/pGAAFET/bsimcmg_pmos.va"
define_leafcell -extsim_model -type nmos_soi -pin_position {0 1 2 3 4} bsimcmg_nmos
define_leafcell -extsim_model -type pmos_soi -pin_position {0 1 2 3 4} bsimcmg_pmos

set_var extsim_flatten_netlist 0

# The external simulation engine is used for all simulations (char_library option -extsim must be specified)
set_var extsim_exclusive 1

set spicefiles_spectre $rundir/NETLIST/$cell.scs
lappend spicefiles_spectre $rundir/MODELS/nGAAFET/bsimcmg_nmos.scs
lappend spicefiles_spectre $rundir/MODELS/pGAAFET/bsimcmg_pmos.scs
read_spice -format spectre $spicefiles_spectre

## Characterize the library for NLDM (default), CCS and ECSM timing.
char_library -ccs -ecsm -extsim spectre -cells $cell -thread 10

## Save characterization database for post-processing ##
write_ldb ${rundir}/LDB/$cell.ldb

## Generate a .lib with ccs, ecsm ###
write_library -overwrite -ccs ${rundir}/LIBRARY/${cell}_ccs.lib
write_library -overwrite -ecsm ${rundir}/LIBRARY/${cell}_ecsm.lib
write_library -overwrite ${rundir}/LIBRARY/${cell}.lib

## Generate ascii datatsheet ###
write_datasheet -format text ${rundir}/DATASHEET/$cell

--------------------------------------------------------------------------------------

The error is:

ERROR (LIB-465): (char_library): The Program will exit now, as char_library is not supported in interactive mode.
Finished Liberate Execution.