Exception in thread "main" java.lang.IllegalStateException: Cannot retrieve files with 'spark' scheme without an active SparkEnv.

[harinipedamallu]

I'm very new to Spark and Cassandra, just started with this example Went into the below issue, please help me understand what has gone into this issue

C:\Users\user\Desktop\softwares\spark-2.4.3-bin-hadoop2.7\spark-2.4.3-bin-hadoop2.7\bin>spark-submit --class com.github.boneill42.JavaDemo --master spark://localhost:7077 C:\Users\user\git\spark-on-cassandra-quickstart\target/spark-on-cassandra-0.0.1-SNAPSHOT-jar-with-dependencies.jar spark://localhost:7077 localhost 19/06/08 20:29:46 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable Exception in thread "main" java.lang.IllegalStateException: Cannot retrieve files with 'spark' scheme without an active SparkEnv. at org.apache.spark.util.Utils$.doFetchFile(Utils.scala:690) at org.apache.spark.deploy.DependencyUtils$.downloadFile(DependencyUtils.scala:137) at org.apache.spark.deploy.SparkSubmit$$anonfun$prepareSubmitEnvironment$7.apply(SparkSubmit.scala:367) at org.apache.spark.deploy.SparkSubmit$$anonfun$prepareSubmitEnvironment$7.apply(SparkSubmit.scala:367) at scala.Option.map(Option.scala:146) at org.apache.spark.deploy.SparkSubmit.prepareSubmitEnvironment(SparkSubmit.scala:366) at org.apache.spark.deploy.SparkSubmit.submit(SparkSubmit.scala:143) at org.apache.spark.deploy.SparkSubmit.doSubmit(SparkSubmit.scala:86) at org.apache.spark.deploy.SparkSubmit$$anon$2.doSubmit(SparkSubmit.scala:924) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:933) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)