fix serialization of Error objects
fix serialization of Error objects

pipedrive/dreadnot,racker/dreadnot,ebensing/dreadnot,ebensing/dreadnot,fr34k8/dreadnot,racker/dreadnot,ebensing/dreadnot,pipedrive/dreadnot,racker/dreadnot,pipedrive/dreadnot,fr34k8/dreadnot