Solace integration with Kafka over TCPS failing

I am trying to connect Solace cloud broker with Kafka. I have a topic in Solace cloud. I want to subscribe into the Solace topic through the pub-sub-plus source connector.

Here are my Source Connector Configuration:

{
    "name": "solaceSource",
    "config": {
        "name":"solaceSource",
        "kafka.topic":"solace-connector-test",
        "tasks.max":"1",
        "connector.class":"com.solace.connector.kafka.connect.source.SolaceSourceConnector",
        "value.converter":"org.apache.kafka.connect.converters.ByteArrayConverter",
        "key.converter":"org.apache.kafka.connect.storage.StringConverter",
        "sol.host":"tcps://mr-12uy34hj345.messaging.solace.cloud:55555",
        "sol.username":"solace-cloud-client",
        "sol.password":"thesecretpassword",
        "sol.vpn_name":"solaceservice",
        "sol.topics": "sourcetest",
        "sol.ssl_trust_store":"/opt/external-cert/myTrustStore.jks",
        "sol.ssl_trust_store_password":"changeit",
        "sol.message_processor_class":"com.solace.connector.kafka.connect.source.msgprocessors.SolSampleSimpleMessageProcessor",
        "sol.dynamic_destination":"true",
        "errors.log.enable":"true"
    }
}

I have downloaded the PEM file from the given connection details and insert it into the myTrustStore.jks file.

I am getting the following error:
Received Solace exception java.net.ConnectException: Connection refused

Any help would be appreciated.