ERA-Interim Nanf values

Hi,
I am peforming some simulations with WRF version 3.9.1, using the ERA-Interim 0.75 Degree from the ECMWF dataset.
All my steps were successfully run, geogrid, ungrib, metgrid, real, also the wrf.exe, however when you look at the data, the values are presented as "Nanf" after the first day (I have attached a print). I could perfomed just on single simulation without this problem, the others simulations all presented these NanF values. Moreover, I also used the UCAR dataset NCEP GDAS/FNL 0.25 Degree, and I didnt get any problem.
Thank you in advance.

Hi,
Can you attach the namelist.input file you are using for this? Can you also let me know exactly which variable you are looking at and seeing the NaNf values? Are you seeing it just for this variable, or for others, as well? Can you also attach your running log file (e.g., rsl.out.0000)? Thanks!