HELP! Index Task Failing to parse? Whats wrong with this syntax? How do I get debug log on server?

Hi,

Trying to submit this to druid .9.0 overlord.

Getting error

Error code:400 message:{“error”:“Instantiation of [simple type, class io.druid.indexing.common.task.IndexTask] value failed: null”}.

Request

{
  "id": "1496804400000_1496807999999_05a99cce-deda-4a9a-b5f0-012b722bad2f",
  "type": "index",
  "spec": {
    "dataSchema": {
      "dataSource": "event",
      "parser": {
        "type": "string",
        "parseSpec": {
          "format": "json",
          "columns": [],
          "timestampSpec": {
            "column": "time",
            "format": "auto"
          },
          "dimensionsSpec": {
            "dimensions": [
              "action"
            ],
            "dimensionExclusions": [],
            "spatialDimensions": []
          }
        }
      },
      "metricsSpec": [
        {
          "type": "longSum",
          "name": "loadTimeMillis",
          "fieldName": "loadtimemillis"
        },
        {
          "type": "count",
          "name": "count"
        }
      ],
      "granularitySpec": {
        "type": "uniform",
        "segmentGranularity": "hour",
        "queryGranularity": "hour",
        "intervals": [
          "2017-06-07/2017-06-07"
        ]
      }
    },
    "ioConfig": {
      "type": "index",
      "firehose": {
        "type": "local",
        "baseDir": "/var/data",
        "filter": "Event*"
      }
    },
    "tuningConfig": {
      "type": "index",
      "targetPartitionSize": 5000000,
      "maxRowsInMemory": 75000
    }
  }
}

Thanks
Doron

Figured it out. Interval was the same date which is wrong.