charmm-gui namd inputs not working namd

From: İmren Bayıl (
Date: Sun Jul 17 2022 - 16:23:47 CDT

my system is dna-ligand.I created inputs files (charmm36) for namd in to
the charmm-gui.
for namd simulation I am getting this error How to fix this error please
FATAL ERROR: couldn't read file "../step3_pbcsetup.str": no such file or
    while executing
"exec tr "\[:upper:\]" "\[:lower:\]" < ../step3_pbcsetup.str | sed -e "s/
=//g" > step3_input.str"
    (file "step4_equilibration.inp" line 9)

This archive was generated by hypermail 2.1.6 : Tue Dec 13 2022 - 14:32:44 CST