FIX Add default value for generic error details
FIX Add default value for generic error details

caiothomas/iotagent-node-lib,caiothomas/iotagent-node-lib,telefonicaid/iotagent-node-lib,telefonicaid/iotagent-node-lib,telefonicaid/iotagent-node-lib,caiothomas/iotagent-node-lib