error when excute ww3_grib can t generate field (PT02 and T02)

[aminekhedim]

I want to generate the variables PT02 and T02 in GRIB2 format, but when I execute the ww3_grib command, I encounter the error message 'Please update field.' This occurs even though I have successfully generated these variables in NetCDF format using the ww3_ounf tool in WaveWatch III version 7.14.
*** WAVEWATCH III GRIB output postp. ***
==============================================

Comment character is '$'

Grid name : Mediteranean0.1

LINEIN: 20240101 000000 10800. 24
20240101000000 10800. 24 p
GEN_PRO -99999

Output time data :

  First time         : 2024/01/01 00:00:00 UTC
  Interval           :            03:00:00    
  Number of requests :   24
        Fields   : Wave height         
                   Mean wave period(+2)
                   Mean wave dir. a1b1 
                   Part. wave height   
                   Part. mean direction
                   Part. mean per. (+2)

Requested output fields not yet available:

Successfully requested output fields :

  Wave height         
  Mean wave period(+2)
  Mean wave dir. a1b1 
  Part. wave height   
  Part. mean direction
  Part. mean per. (+2)

Additional GRIB parameters :

  Run time           : 2024/01/01 00:00:00 UTC
  GRIB center ID     :    7
  GRIB gen. proc. ID :   10
  GRIB grid ID       :  255
  GRIB GDS parameter :  192

Fields in file :

  Wave height         
  Mean wave period(+2)
  Mean wave dir. a1b1 
  Part. wave height   
  Part. mean direction
  Part. mean per. (+2)

CHOSEN GRID TYPE: : LLRECTILINEAR

Generating file

  Data for 2024/01/01 00:00:00 UTC    0H forecast.

*** WAVEWATCH III ERROR IN W3EXGB :
PLEASE UPDATE FIELDS !!!