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    This happens when you try to instantiate a class that can't be instantiated, either because the class object is abstract, an interface, an array class, a primitive type, void, or because the class has no nullary constructor.

java.lang.InstantiationException: null	at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(	at java.lang.reflect.Constructor.newInstance(	at java.lang.Class.newInstance(	at org.apache.jmeter.protocol.tcp.sampler.TCPSampler.getProtocol(	at org.apache.jmeter.protocol.tcp.sampler.TCPSampler.initSampling(	at org.apache.jmeter.protocol.tcp.sampler.TCPSampler.sample(	at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(	at org.apache.jmeter.threads.JMeterThread.processSampler(	at	at