error gmx_MMPBSA_ana

[negin s]

Hello gmx_MMPBSA users, I wanted to use gmx_MMPBSA_ana but i got this error, i also tried installing PyQt5, but gmx_MMPBSA_ana did not work. My system is ubunto 2020.04 virtual (VMware).

(AmberTools21) safaei@ubuntu:~/Downloads/gmx_MMPBSA-master/docs/examples/COVID-19_related_proteins/S1-ACE2_complex_7dmu$ gmx_MMPBSA -O -i mmpbsa.in -cs com.tpr -ci index.ndx -cg 20 19 -ct com_traj.xtc -cp topol.top
[INFO   ] Starting
[INFO   ] Command-line
  gmx_MMPBSA -O -i mmpbsa.in -cs com.tpr -ci index.ndx -cg 20 19 -ct com_traj.xtc -cp topol.top

[WARNING] protein_forcefield and ligand_forcefield variables are deprecate since version 1.4.1 and will be remove in the next version. Please, use forcefield instead.
[WARNING] entropy_seg variable is deprecate since version 1.4.2 and will be remove in v1.5.0. Please, use ie_segment instead.
[INFO   ] Checking external programs...
[INFO   ] cpptraj found! Using /home/safaei/anaconda3/envs/AmberTools21/bin/cpptraj
[INFO   ] tleap found! Using /home/safaei/anaconda3/envs/AmberTools21/bin/tleap
[INFO   ] parmchk2 found! Using /home/safaei/anaconda3/envs/AmberTools21/bin/parmchk2
[INFO   ] sander found! Using /home/safaei/anaconda3/envs/AmberTools21/bin/sander
[INFO   ] Using GROMACS version > 5.x.x!
[INFO   ] gmx found! Using /usr/local/gromacs/bin/gmx
[INFO   ] Checking external programs...Done.

[INFO   ] Building AMBER Topologies from GROMACS files...
[INFO   ] Checking gmxMMPBSA data folder exists in Amber data...
[INFO   ] Get PDB files from GROMACS structures files...
[INFO   ] Making gmx_MMPBSA index for complex...
[INFO   ] Normal Complex: Saving group 20_19 in _GMXMMPBSA_COM_index.ndx file as _GMXMMPBSA_COM.pdb
[INFO   ] No receptor structure file was defined. Using ST approach...
[INFO   ] Using receptor structure from complex to generate AMBER topology
[INFO   ] Normal Complex: Saving group 20 in _GMXMMPBSA_COM_index.ndx file as _GMXMMPBSA_REC.pdb
[INFO   ] No ligand structure file was defined. Using ST approach...
[INFO   ] Using ligand structure from complex to generate AMBER topology
[INFO   ] Normal ligand: Saving group 19 in _GMXMMPBSA_COM_index.ndx file as _GMXMMPBSA_LIG.pdb
[INFO   ] Building Normal Complex Amber Topology...
[INFO   ] Writing Normal Complex Amber Topology...
[INFO   ] No Receptor topology files was defined. Using ST approach...
[INFO   ] Building AMBER Receptor Topology from Complex...
[INFO   ] No Ligand Topology files was defined. Using ST approach...
[INFO   ] Building AMBER Ligand Topology from Complex...
[INFO   ] Cleaning normal complex trajectories...
[INFO   ] Building AMBER Topologies from GROMACS files...Done.

[INFO   ] Loading and checking parameter files for compatibility...

CHAMBER prmtops found. Forcing use of sander
Preparing trajectories for simulation...
5 frames were processed by cpptraj for use in calculation.

Running calculations on normal system...

Beginning GB calculations with /home/safaei/anaconda3/envs/AmberTools21/bin/sander
  calculating complex contribution...
  calculating receptor contribution...
  calculating ligand contribution...

Timing:
Total GROMACS setup time:                   2.147 min.
Total AMBER setup time:                     0.089 min.
Creating trajectories with cpptraj:         0.030 min.
Total calculation time:                     4.144 min.

Total GB calculation time:                  4.144 min.

Statistics calculation & output writing:    0.001 min.
Total time taken:                           6.411 min.
[INFO   ]

Thank you for using gmx_MMPBSA. Please cite us if you publish this work with this reference:
    Mario S. Valdés Tresanco, Mario E. Valdes-Tresanco, Pedro A. Valiente, & Ernesto Moreno Frías
    gmx_MMPBSA (Version v1.4.2). Zenodo. http://doi.org/10.5281/zenodo.4569307

Also consider citing MMPBSA.py
    Miller III, B. R., McGee Jr., T. D., Swails, J. M. Homeyer, N. Gohlke, H. and Roitberg, A. E.
    J. Chem. Theory Comput., 2012, 8 (9) pp 3314-3321

[INFO   ] Opening gmx_MMPBSA_ana to analyze results...

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl, xcb.

[ERROR  ] Unable to start gmx_MMPBSA_ana...
[INFO   ] Finalized...

(AmberTools21) safaei@ubuntu:~/Downloads/gmx_MMPBSA-master/docs/examples/COVID-19_related_proteins/S1-ACE2_complex_7dmu$ python -m pip install PyQt5
Requirement already satisfied: PyQt5 in /home/safaei/anaconda3/envs/AmberTools21/lib/python3.9/site-packages (5.15.6)
Requirement already satisfied: PyQt5-Qt5>=5.15.2 in /home/safaei/anaconda3/envs/AmberTools21/lib/python3.9/site-packages (from PyQt5) (5.15.2)
Requirement already satisfied: PyQt5-sip<13,>=12.8 in /home/safaei/anaconda3/envs/AmberTools21/lib/python3.9/site-packages (from PyQt5) (12.9.0)

[Mario Ernesto]

Hello there! Please check this section in the documentation...

https://valdes-tresanco-ms.github.io/gmx_MMPBSA/Q%26A/OS_issues/

Cheers!

Mario E

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