Disabling "ECCODES ERROR" message

[jodemaey]

Hi there,

When using to_grib to write to GRIB v2, I keep receiving message like:

ECCODES ERROR   :  concept: no match for cfName=unknown
ECCODES ERROR   :  concept: input handle edition=2, centre=ecmf

I don't know why. to_grib option grib_keys is set to:

grib_keys = {
   'edition': 2,
   'centre': 'rmib',
}

However, the output grib files are fine so I would like to just disable those messages. How can I do that?