java.lang.ExceptionInInitializerError: This exception has no message.

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java.lang.NullPointerException:
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ProxyLibraryDir.get(MCRConfiguration.java:143)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ProxyLibraryDir.(MCRConfiguration.java:173)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getProxyLibraryDir(MCRConfiguration.java:178)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$MCRRoot.get(MCRConfiguration.java:77)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$MCRRoot.(MCRConfiguration.java:87)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getMCRRoot(MCRConfiguration.java:92)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration$ModuleDir.(MCRConfiguration.java:66)
at com.mathworks.toolbox.javabuilder.internal.MCRConfiguration.getModuleDir(MCRConfiguration.java:71)
at com.mathworks.toolbox.javabuilder.internal.MWMCR.(MWMCR.java:1553)
at com.demo3.Demo3MCRFactory.newInstance(Demo3MCRFactory.java:49)
at com.demo3.Demo3MCRFactory.newInstance(Demo3MCRFactory.java:60)
at com.demo3.MLTestClass.(MLTestClass.java:63)
at matlabtestapplication.MatlabTestApplication.main(MatlabTestApplication.java:21)

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