java.lang.reflect.InvocationTargetException: This exception has no message.

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com.solarmetric.license.LicenseException: No product license key was found. Please ensure that your license key is specified in y our file (or in the "General" tab of your IDE's configuration dialog), that the key has not expired, and that it is the corr ect key for the version of the product that you are running. If you need to request an evaluation key, please go to http://www.solarmetric.c om, or contact .
at com.solarmetric.license.License.(
at kodo.conf.JDOConfigurationImpl.getLicense(
at kodo.runtime.PersistenceManagerFactoryImpl.(
at kodo.versant.ObjectPersistenceManagerFactory.(
at kodo.versant.ObjectPersistenceManagerFactory.getPersistenceManagerFactory(
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(Unknown Source)
at tutorial.JDOFactory.getPersistenceManagerFactory(
at tutorial.JDOFactory.getPersistenceManager(
at tutorial.SeedDatabase.main(

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