Help : Warnings during the initialization HUMIDITY ???

[Nikoloz]

Hello please help after simulation  suddenly appeared this warning  : 

*** Warnings during the initialization:
Relative humidity is available in the weather data variables

No Precipitable Water Data available. Spectral correction will use Relative Humidity to estimate Precipitable Water.

 

I i could not find any humidity issues in Meteo data details.

Such error newer appeared before

[Auriane Canesse]

The precipitable water data is used to estimate spectral corrections in some cases.
https://www.pvsyst.com/help/project-design/array-and-system-losses/spectral-correction.html?h=spectral#first-solar-spectral-correction-model-management

If that data is not present in the weather input, relative humidity is used instead. This warning is more of an information.