SMT - DataException with io.debezium.connector.mongodb.transforms.UnwrapFromMongoDbEnvelope

debezium-connector-mongodb-0.7.4-plugin.tar.gz
Confluent Platform 4.0

{
  "name": "mongodb-connector-json-a04",
  "config": {
    "connector.class": "io.debezium.connector.mongodb.MongoDbConnector",
        "value.converter":"org.apache.kafka.connect.json.JsonConverter",
        "key.converter":"org.apache.kafka.connect.json.JsonConverter",
        "key.converter.schemas.enable":"true",
        "value.converter.schemas.enable":"true",
    "mongodb.hosts": "rs0/proxmox01.moffatt.me:27017",
    "mongodb.name": "ubnt",
    "database.whitelist": "ace",
    "collection.whitelist": "ace.device",
    "transforms": "unwrap,changeTopic",
    "transforms.unwrap.type" :"io.debezium.connector.mongodb.transforms.UnwrapFromMongoDbEnvelope",
"transforms.changeTopic.type":"org.apache.kafka.connect.transforms.RegexRouter",
"transforms.changeTopic.regex":"(.*)",
"transforms.changeTopic.replacement":"$1-json-a04"
  }
}

[2018-03-07 17:35:28,504] ERROR WorkerSourceTask{id=mongodb-connector-json-a04-0} Task threw an uncaught and unrecoverable exception (org.apache.kafka.connect.runtime.WorkerTask:172)
org.apache.kafka.connect.errors.DataException: is_11ac is not a valid field name
        at org.apache.kafka.connect.data.Struct.lookupField(Struct.java:252)
        at org.apache.kafka.connect.data.Struct.put(Struct.java:202)
        at io.debezium.connector.mongodb.transforms.MongoDataConverter.convertFieldValue(MongoDataConverter.java:188)
        at io.debezium.connector.mongodb.transforms.MongoDataConverter.lambda$convertFieldValue$0(MongoDataConverter.java:176)
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1380)
        at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
        at io.debezium.connector.mongodb.transforms.MongoDataConverter.convertFieldValue(MongoDataConverter.java:138)
        at io.debezium.connector.mongodb.transforms.MongoDataConverter.convertRecord(MongoDataConverter.java:32)
        at io.debezium.connector.mongodb.transforms.UnwrapFromMongoDbEnvelope.apply(UnwrapFromMongoDbEnvelope.java:103)
        at org.apache.kafka.connect.runtime.TransformationChain.apply(TransformationChain.java:38)
        at org.apache.kafka.connect.runtime.WorkerSourceTask.sendRecords(WorkerSourceTask.java:211)
        at org.apache.kafka.connect.runtime.WorkerSourceTask.execute(WorkerSourceTask.java:187)
        at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:170)
        at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:214)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)