java.lang.NoClassDefFoundError: org/apache/commons/collections/map/ReferenceMap

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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

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java.lang.NoClassDefFoundError: org/apache/commons/collections/map/ReferenceMap
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)

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