ERROR During MPI run

From: SHOBHIT JAIN . (f20150817_at_hyderabad.bits-pilani.ac.in)
Date: Sat Oct 12 2019 - 00:18:54 CDT

Respected sir/ma'am
I was trying to run replica exchange Molecular dynamics and on running
command
Mpirun ./namd2 +replicas 8 <conf file> output file

And getting error as standalone 1 process is returning 0

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