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Bug report

First, I launched zookeeper Kafka and debeizum1.8.1 locally，and I have configured an connector for oracle.Then I execute the  

docker run -it --rm --name debezium-ui -p 8080:8080 -e KAFKA_CONNECT_URIS=http://localhost:8083/connectors/ debezium/debezium-ui:1.8

to run a debezium-ui container.But when I access the *http://localhost:8080

I get an error like this:

 ERROR [io.deb.con.res.KafkaConnectClientExceptionMapper] (executor-thread-1) Could not connect to Kafka Connect! Kafka Connect REST API is not available at "http://localhost:8083/connectors/": RESTEASY004655: Unable to invoke request: org.apache.http.conn.HttpHostConnectException: Connect to localhost:8083 [localhost/127.0.0.1] failed: Connection refused (Connection refused): 

What Debezium connector do you use and what version?

debeizum-connector-oracle 1.8.1final

What is the connector configuration?

{
    "name": "oracle-test",
    "config":

{             "connector.class": "io.debezium.connector.oracle.OracleConnector",             "database.server.name": "CDC",             "database.hostname": "192.168.252.137",             "database.port": "1521",             "database.user": "C##DBZUSERX",             "database.password": "dbz",             "database.dbname": "CDB19C",             "database.pdb.name": "PDB1",             "schema.include.list": "C##DBZUSERX",             "offset.storage": "org.apache.kafka.connect.storage.FileOffsetBackingStore",             "lobEnabled":"true",             "offset.flush.interval.ms": "6000",             "database.connection.adapter": "xstream",             "database.out.server.name" : "dbzxout",             "database.history.kafka.bootstrap.servers": "127.0.0.1:9092",             "database.history.kafka.topic": "oracle.history",             "key.converter.schemas.enable": "true",             "value.converter.schemas.enable": "true",             "snapshot.mode": "schema_only",             "provide.transaction.metadata": "true",             "transforms": "route",             "transforms.route.type": "org.apache.kafka.connect.transforms.RegexRouter",             "transforms.route.regex":"([^.]+)\\.([^.]+)\\.([^.]+)$",             "transforms.route.replacement":"$1.$2.ALL_TABLES"     }

}

What is the captured database version and mode of depoyment?

(E.g. on-premises, with a specific cloud provider, etc.)

oracle 19.3.0 locally single_instance

What behaviour do you expect?

<Your answer>

What behaviour do you see?

<Your answer>

Do you see the same behaviour using the latest relesead Debezium version?

(Ideally, also verify with latest Alpha/Beta/CR version)

<Your answer>

Do you have the connector logs, ideally from start till finish?

(You might be asked later to provide DEBUG/TRACE level log)

<Your answer>

How to reproduce the issue using our tutorial deployment?

<Your answer>

Feature request or enhancement

For feature requests or enhancements, provide this information, please:

Which use case/requirement will be addressed by the proposed feature?

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Implementation ideas (optional)

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