java.lang.NoClassDefFoundError: scala/collection/GenTraversableOnce$class

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Expert tip

Check if you didn't forget to instantiate your topic in the kafka broker.

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This error comes up in the old version of spring-test , you should update tospring test 4.3.2

java.lang.NoClassDefFoundError: scala/collection/GenTraversableOnce$class
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at org.apache.spark.util.TimeStampedWeakValueHashMap.(TimeStampedWeakValueHashMap.scala:42)
at org.apache.spark.SparkContext.(SparkContext.scala:298)
at com.examples.testSparkPost$.main(testSparkPost.scala:27)
at com.examples.testSparkPost.main(testSparkPost.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)

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