Problems starting postman

[toboladao]

I'm trying to automate the creation of plots using plotman, but I believe I must have set something wrong and I can't solve it myself.
After proceeding with the installation, configuring the plotman.yaml, and trying to start with the plotman plot command, the system returns the following message to me:

traceback (most recent call last):
  File "/home/ubuntu/chia-blockchain/venv/bin/plotman", line 8, in <module>
    sys.exit(main())
  File "/home/ubuntu/chia-blockchain/venv/lib/python3.8/site-packages/plotman/plotman.py", line 137, in main
    cfg = configuration.get_validated_configs(config_text, config_path)
  File "/home/ubuntu/chia-blockchain/venv/lib/python3.8/site-packages/plotman/configuration.py", line 37, in get_validated_configs
    config_objects = yaml.load(config_text, Loader=yaml.SafeLoader)
  File "/home/ubuntu/chia-blockchain/venv/lib/python3.8/site-packages/yaml/__init__.py", line 114, in load
    return loader.get_single_data()
  File "/home/ubuntu/chia-blockchain/venv/lib/python3.8/site-packages/yaml/constructor.py", line 49, in get_single_data
    node = self.get_single_node()
  File "/home/ubuntu/chia-blockchain/venv/lib/python3.8/site-packages/yaml/composer.py", line 39, in get_single_node
    if not self.check_event(StreamEndEvent):
  File "/home/ubuntu/chia-blockchain/venv/lib/python3.8/site-packages/yaml/parser.py", line 98, in check_event
    self.current_event = self.state()
  File "/home/ubuntu/chia-blockchain/venv/lib/python3.8/site-packages/yaml/parser.py", line 171, in parse_document_start
    raise ParserError(None, None,
yaml.parser.ParserError: expected '<document start>', but found '<block mapping start>'
  in "<unicode string>", line 4, column 1:
    user_interface:
    ^

that I'm not managing to solve. can anybody help me?

[cojarbi]

Your yaml file has an issue most likely in line 4 column 1, like the second to last line says.

Use a tools like this to check you file

http://www.yamllint.com

[toboladao]

I managed to solve the problem using a text editor outside the terminal to edit plotman.yaml .
Anyway thank you.