Rasa condition key domain file

i am working on rasa 2.0.0 version, i am using condition key in domain file , but facing error during training, i am pasting error below. Please help .

"Please make sure the file is correct and all mandatory parameters are specified. Here are the errors found during validation: ** in /home/PycharmProjects/rasa22/pro_rasa/domain.yml:155:** ** Key ‘condition’ was not defined. Path: ‘/responses/utter_loc/0’** "