Deserialization: Explicit the keys that made the deserialization of an object fail

[a-corni]

Lately, a serialized Device had an error in its terms, the p_false_pos argument of the default_noise_model was written p_False_pos. This made finding the mistake very hard. Perhaps that, in the eventuality of a failing deserialization, we could try to check if the error is coming from an error in the keys of the dictionnary of the JSON-formatted object ?

[HGSilveri]

Indeed, the JSON validator error message is almost always useless but what you are proposing sounds like we would start doing part of its job.

Side note: This type of error only comes if someone is tinkering with the abstract representation manually, which should not happen...