What is the meaning of the error message "yaml: line 20: did not find expected key" when Helm encounters a problem converting YAML to JSON?

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This error message indicates that Helm was unable to convert YAML to JSON due to a missing key on line 20 of the YAML file. This could be caused by a syntax error or a formatting issue in the YAML file. The error message is trying to tell you that Helm expected a key on line 20 but was unable to find it. To fix the problem, you will need to review your YAML file and correct any syntax or formatting issues that may be causing the error.