ncl error with wrf out file

[Jayanti pal]

I would like to plot wind of simulated idealize super cell case using ncl

here is the details of file (wrfout)

dimensions:
Time = UNLIMITED ; // (49 currently)
DateStrLen = 19 ;
west_east = 41 ;
south_north = 41 ;
bottom_top = 40 ;
bottom_top_stag = 41 ;
soil_layers_stag = 5 ;
west_east_stag = 42 ;
south_north_stag = 42 ;
seed_dim_stag = 8 ;

Here below I have attached a ncl file. as .ncl is not supported file, I have convert it into .txt file. While i runned that I got error

warning:ContourPlotInitialize: scalar field is constant; no contour lines will appear; use cnConstFEnableFill to enable fill
(0) gsn_csm_map_ce: Fatal: The resources mpMinLatF/mpLeftCornerLatF must be less than the resources mpMaxLatF/mpRightCornerF.
(0) Execution halted.

So I plot a variable in grads and pic of it is attached below.
I dont understand where is the mistake??
kindly help.

 

[Jayanti pal]

I would also try to plot a skew T with attached script.
but shows

fatal:wrf_ll_to_ij: The MAP_PROJ attribute must be set to 1, 2, 3, or 6
fatal:["Execute.c":8637]:Execute: Error occurred at or near line 2288 in file /home/oem/miniconda3/envs/ncl_stable/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl

fatal:["Execute.c":8637]:Execute: Error occurred at or near line 61 in file skewt_10.ncl