Why does my n8n JSON parser output formatting error occur?

I'm setting up the JSON parser in my n8n workflow (n8n version: 1.71.1, Database: Postgres, Running via Docker) but I occasionally encounter the following error:

AI Agent error output:
Model output doesn't fit required format

The JSON output from the parser is:

JSONCopied
{
  "action": "parse",
  "response": {
    "output": {
      "value 1": "actual value",
      "value 2": "actual value"
    }
  }
}
] 

The example JSON I provided is:

JSONCopied
{
	"value 1": "output 1",
	"value 2": "output 2"
}

Am I missing something?