error while running WPS-4.2 - metgrid.exe

[Hoda]

Hello Everyone, I am Trying to run WRF-4.2.1 model and encountering with an error while running WPS-4.2 - metgrid.exe, error is as below:

./metgrid.exe
Processing domain 1 of 3
Processing 2017-07-01_00
grib2
ERROR: Error in ext_pkg_write_field
application called MPI_Abort(MPI_COMM_WORLD, 0) - process 0
[unset]: write_line error; fd=-1 buf=:cmd=abort exitcode=0
:
system msg for write_line failure : Bad file descriptor

I also attached the 'metgrid.log' and 'namelist.wps' files here.
Any comment or possible solution would help a lot!

 

[Ming Chen]

What is the data you ungrib?
This error message is often caused by data located at different vertical levels. Please double check your intermediate files and make sure they have the same variables required by WPS and all these variables have the number of pressure levels.

 

[Hoda]

What is the data you ungrib?
This error message is often caused by data located at different vertical levels. Please double check your intermediate files and make sure they have the same variables required by WPS and all these variables have the number of pressure levels.

Thank you for your helps.
The data that I have downloaded are in grib2 format.
May I also ask how can I check variables and the number of pressure levels in the intermediate files?