Kapacitor script is not executed

Telegraf
1

I have defined a (in my eues) simple kapacitor script

var max_ms_domain = batch
                        |query('Select max(query_time_ms) from MONITOR.autogen.dns_query GROUP BY domain')
                                .every(30s)
                        |log()

I have enabled the script, but it is not executed. Here is the output of curl http://localhost:9092/kapacitor/v1/tasks/dnsq

{
    "link": {
        "rel": "self",
        "href": "/kapacitor/v1/tasks/dnsq"
    },
    "id": "dnsq",
    "template-id": "",
    "type": "batch",
    "dbrps": [
        {
            "db": "MONITOR",
            "rp": "autogen"
        }
    ],
    "script": "var max_ms_domain = batch\n    |query('Select max(query_time_ms) from MONITOR.autogen.dns_query GROUP BY domain')\n        .every(30s)\n    |log()\n",
    "vars": {},
    "dot": "digraph dnsq {\ngraph [throughput=\"0.00 batches/s\"];\n\nquery1 [avg_exec_time_ns=\"0s\" batches_queried=\"0\" errors=\"0\" points_queried=\"0\" working_cardinality=\"0\" ];\nquery1 -\u003e log2 [processed=\"0\"];\n\nlog2 [avg_exec_time_ns=\"0s\" errors=\"0\" working_cardinality=\"0\" ];\n}",
    "status": "enabled",
    "executing": true,
    "error": "",
    "stats": {
        "task-stats": {
            "throughput": 0
        },
        "node-stats": {
            "batch0": {
                "avg_exec_time_ns": 0,
                "collected": 0,
                "emitted": 0,
                "errors": 0,
                "working_cardinality": 0
            },
            "log2": {
                "avg_exec_time_ns": 0,
                "collected": 0,
                "emitted": 0,
                "errors": 0,
                "working_cardinality": 0
            },
            "query1": {
                "avg_exec_time_ns": 0,
                "batches_queried": 0,
                "collected": 0,
                "emitted": 0,
                "errors": 0,
                "points_queried": 0,
                "working_cardinality": 0
            }
        }
    },
    "created": "2017-09-20T11:03:49.463014538Z",
    "modified": "2017-09-20T11:04:39.744940359Z",
    "last-enabled": "2017-09-20T11:04:35.952662834Z"
}

What am I missing?