error in module "deformule.py"

[B2BWild]

While running an OURS calculation, I get an error "error in module "deformule.py"
I have attached the JSON. It is clear to me there is no 'Bron' data defined in the json. However, I do not know how that is possible as all calculations up to 'Main formula for receptor 'xxxx'' is running without error or warning.

OURS_19920(deformule.py).zip

[B2BWild]

I think it emerges when a source has such low excitation that the results produce zeros and empty values......

[ArnaudYK]

In the example there is no valid source data. ([Bron] en empty). There are two possibilities: Trains used are not mapped to the emission database or no trains in the source data. Look at the traintype tab in OURS. If it is mapped to train number 0 there is no reliable emission data available. The calculation will fail.