Why doesn't mapping policy trigger work?

Rasa Open Source
1 
intents:
  - request_music
       triggers: action_request_music
  - change_music

According to the documentation, I specified the “triggers” as above, where ‘action_request_music’ is a custom action. But I received the following error:

Traceback (most recent call last): File “/Users/Nlp/chatbot/dialog/train_core.py”, line 44, in loop.run_until_complete(train_dialogue(domain_file=domain_md_path, policy_config=“config.yml”, model_path=model_path, training_data_file=skill_md_path)) File “uvloop/loop.pyx”, line 1451, in uvloop.loop.Loop.run_until_complete File “/Users/Nlp/chatbot/dialog/train_core.py”, line 15, in train_dialogue agent = Agent(domain_file, policies=policies) File “/Users/Nlp/chatbot/rasa/core/agent.py”, line 290, in init self.domain = self._create_domain(domain) File “/Users/Nlp/chatbot/rasa/core/agent.py”, line 813, in _create_domain return Domain.load(domain) File “/Users/Nlp/chatbot/rasa/core/domain.py”, line 193, in load other = cls.from_path(path, skill_imports) File “/Users/Nlp/chatbot/rasa/core/domain.py”, line 207, in from_path domain = cls.from_file(path) File “/Users/Nlp/chatbot/rasa/core/domain.py”, line 220, in from_file return cls.from_yaml(rasa.utils.io.read_file(path)) File “/Users/lingvisa/Nlp/chatbot/beyond-rasa/rasa/core/domain.py”, line 224, in from_yaml cls.validate_domain_yaml(yaml) File “/Users/Nlp/chatbot/rasa/core/domain.py”, line 324, in validate_domain_yaml "The provided domain file is invalid. You can use " rasa.core.domain.InvalidDomain: The provided domain file is invalid. You can use http://www.yamllint.com/ to validate the yaml syntax of your domain file.

Why is it invalid domain?

3

This question has been resolved in another post. It is my mistake in specifying the trigger format.

4

Could you please mention the correct format here, thanks!