Hello! I'm trying to run Spark classifier using scala on my machine.But am getting the following error.I need help to fix it.

[#1]

Only one SparkContext may be running in this JVM (see SPARK-2243). To ignore this error, set spark.driver.allowMultipleContexts = true.

[#2]

You are trying to create another SparkContext. Please use the existing one.

In `spark-shell`, `sc` is the SparkContext which Spark created for you.