Bottom layer specific humidty sent from the atmosphere model is less than zero

[MrIgnition]

I am running CLM5 with my own atmospheric forcing. A temporally downscaled dataset from daily to sub-daily. After running the case I got this error.


There will be a total of 1 history tapes

History tape 1 write frequency is MONTHLY
All fields on history tape 1 are grid averaged
Number of time samples on history tape 1 is 2
Output precision on history tape 1 = 2

hist_htapes_build hist tape = 1 written with dov2xy= T
hist_htapes_build Successfully initialized clm2 history files
------------------------------------------------------------
Successfully initialized the land model
begin initial run at:
nstep= 0 year= 2012 month= 1 day=
1 seconds= 0

************************************************************

dtime_sync= 1800 dtime_clm= 1800 mod = 0
ENDRUN:
ERROR:
lnd_import ERROR: Bottom layer specific humidty sent from
the atmosphere model is less than zero


I have scanned through the entire dataset on this specified time-step year 2012, month 1 and day 1 but there is no value less than zero.

1. Could it be that the value is in other timesteps in other files within the stream?
2. Could it be that "Bottom layer specific humidity" as mentioned here does not refer to the raw value coming from the forcing?

If (2) is true kindly help point out where to trace it.

Thanks in advance.