{
  "description": "self dependencies",
  "input": {
    "from": "now-6",
    "to": "now",
    "queries": [
      {
        "refId": "A",
        "datasource": {
          "type": "",
          "uid": "__expr__"
        },
        "type": "math",
        "expression": "$A"
      }
    ]
  },
  "expect": {},
  "error": "[sse.cyclic] cyclic reference in expression [A]"
}