Trouble in fep.tcl file for FEP run in NAMD

From: SYEDA SABIHA SULTANA LUBNA . (p20190061_at_hyderabad.bits-pilani.ac.in)
Date: Sat Oct 30 2021 - 02:02:39 CDT

Hi,
Can someone help me in understanding why I am getting this error message?
This is when i am trying to run my FEP calculation on centose 8 version.
where as the same script is working on ubuntu 20 version.

Info: Based on Charm++/Converse 61002 for
charmpp-6.10.2-rcdhh4jp7pfjtdz5hragsqhs5elcvieh
Info: Built Mon Jan 11 20:27:40 IST 2021 by root on sharanga
Info: 1 NAMD 2.14 linux-x86_64-netlrts 64 node4 2032
Info: Running on 64 processors, 1 nodes, 1 physical nodes.
Info: CPU topology information available.
Info: Charm++/Converse parallel runtime startup completed at 0.0428052 s
CkLoopLib is used in SMP with simple dynamic scheduling (converse-level
notification)
Info: 4681.57 MB of memory in use based on /proc/self/stat
Info: Configuration file is rest-01.namd
Info: Working in the current directory /home/debashreeb/FEP_complex
Info: Sourcing fep.tcl
Warning: Couldn't parse line 105 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 117 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 124 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 137 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 138 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 238 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 246 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 247 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 258 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 271 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 276 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 277 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 278 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 281 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 294 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 297 in configuration file fep.tcl. The line
was: }
Warning: Couldn't parse line 299 in configuration file fep.tcl. The line
was: }
ERROR: Expecting value and optional units for option 'langevinTemp'
ERROR: Multiple definitions of 'alchLambda'
ERROR: in the configuration file are not allowed
ERROR: Expecting value and optional units for option 'alchLambda'
ERROR: Multiple definitions of 'alchLambda2'
ERROR: in the configuration file are not allowed
ERROR: Expecting value and optional units for option 'alchLambda2'
ERROR: Multiple definitions of 'alchLambdaIDWS'
ERROR: in the configuration file are not allowed
ERROR: Expecting value and optional units for option 'alchLambdaIDWS'
ERROR: Expecting value and optional units for option 'LangevinPistonTemp'
ERROR: 'LangevinPistonTemp' was set to 0 but it should be positive
ERROR: Multiple definitions of 'firsttimestep'
ERROR: in the configuration file are not allowed
ERROR: The following variables were set in the
ERROR: configuration file but are NOT VALID
ERROR: runFEP
ERROR: runTIlist
ERROR: reinitvels
ERROR: minimize
ERROR: return
ERROR: lappend
ERROR: while
ERROR: }
ERROR: runFEPlist
ERROR: incr
ERROR: run
ERROR: $win
ERROR: print
ERROR: foreach
ERROR: if

Thanks for the help.

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