Failed to open native connection to Cassandra from jar produced by intellij - scala

Question

I've developed a spark-based application that gets data from kafka and saves it in cassandra DB, using intellij.
connection code in scala:
val cluster = Cluster.builder().addContactPoint("192.168.0.253").withPort(9042).build();
val session = cluster.connect()
the code work fine when I run it from intellij, but I get this error when I try to run it from jar using command line:
Exception in thread "main" java.io.IOException:
Failed to open native connection to Cassandra at {192.168.0.253}:9042 at .... ....
Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException:
All host(s) tried for query failed
(tried: /192.168.0.253:9042 (com.datastax.driver.core.exceptions.TransportException:
[/192.168.0.253] Error writing)) at
com.datastax.driver.core.ControlConnection.reconnectInternal(
ControlConnection.java:233) at
com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:79)
at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1424)
at com.datastax.driver.core.Cluster.getMetadata(Cluster.java:403)
at com.datastax.spark.connector.cql.CassandraConnector$.
com$datastax$spark$connector$cql$CassandraConnector$$createSession(
CassandraConnector.scala:155) ... 13 more
I've produced a jar file from intellij, and I built the jar with dependencies, using [ copy to the output directory and link via manifist ] option.
cassandra.yaml file:
#Whether to start the native transport server.
start_native_transport: true
#port for the CQL native transport to listen for clients on
native_transport_port: 9042
Why is this error raised & and how can I fix it?
Thanks in advance