recommendations is empty. Training job status is failed. But in harness log, everything is ok

[mick912]

engine conf:

{
    "engineId": "rb",
    "engineFactory": "com.actionml.engines.ur.UREngine",
    "sparkConf": {
        "master": "local",
        "spark.serializer": "org.apache.spark.serializer.KryoSerializer",
        "spark.kryo.registrator": "org.apache.mahout.sparkbindings.io.MahoutKryoRegistrator",
        "spark.kryo.referenceTracking": "false",
        "spark.kryoserializer.buffer": "300m",
        "spark.executor.memory": "3g",
        "spark.driver.memory": "3g",
        "spark.es.index.auto.create": "true",
        "spark.es.nodes": "elasticsearch",
        "spark.es.nodes.wan.only": "true"
    },
    "algorithm":{
        "indicators": [
            {
                "name": "buy"
            },
            {
                "name": "add-to-cart"
            },
            {
                "name": "view"
            },
            {
                "name": "like"
            }
        ]
    }
}

items:

events:

jobs:

log: harness.log

Note
I am using docker-compose