How can i solve this error in Gromacs?

Hi :smiley:
I’m using Gromacs 5.1.5 and calculate the protein-protein binding energy with mmpbsa 5.1.2
But I got an error during calculation. How can I solve the problem?
The xtc file was nojump and cut off last 50 ns from full simulation xtc file.

I used the commend; ./g_mmpbsa -f last_50ns_Fc4_run3.xtc -s md3.tpr -n index_Free_energy.ndx -i mmpbsa.mdp -pdie 2 -pbsa -decomp

The error is:

Parsing input file pd6Hub3A.in…
Vio_ctor2: Gethostbyname fail INET sock <> dueto
NOsh: Deprecated use of ION keyword! Use key-value pairs
NOsh: Deprecated use of ION keyword! Use key-value pairs
NOsh: Deprecated use of ION keyword! Use key-value pairs
NOsh: Deprecated use of ION keyword! Use key-value pairs
Parsed input file.
Got paths for 1 molecules
Reading PQR-format atom data from pd6Hub3A.pqr.
Vio_ctor2: Gethostbyname fail INET sock <> dueto <VIO_UNKNOWN_ERROR(24)>
Valist_readPQR: Error parsing atom 1!
Please double check this atom in the pqr file, e.g., make sure there are no concatenated fields.
Error reading molecules!


Program g_mmpbsa, VERSION 5.1.2
Source code file: /home/rajendra/software/gromacs_source/gromacs-5.1.2/src/gromacs/utility/futil.cpp, line: 469

File input/output error:
pd6Hub3A.pqr
For more information and tips for troubleshooting, please check the GROMACS
website at http://www.gromacs.org/Documentation/Errors

I didn’t get an error like this before, I don’t know what i have to do.
Thank you :cry: :cry: :cry: