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java.lang.NoClassDefFoundError: Could not initialize class org.aksw.autosparql.tbsl.gui.vaadin.model.ExtendedTBSL
java.lang.NoClassDefFoundError: Could not initialize class org.aksw.autosparql.tbsl.gui.vaadin.model.ExtendedTBSL	at org.aksw.autosparql.tbsl.gui.vaadin.TBSLManager.(TBSLManager.java:80)	at org.aksw.autosparql.tbsl.gui.vaadin.UserSession.(UserSession.java:26)	at org.aksw.autosparql.tbsl.gui.vaadin.TBSLApplication.init(TBSLApplication.java:54)	at com.vaadin.Application.start(Application.java:551)	at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.startApplication(AbstractApplicationServlet.java:1219)	at com.vaadin.terminal.gwt.server.AbstractApplicationServlet.service(AbstractApplicationServlet.java:484)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:830)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:551)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1586)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1221)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:486)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1549)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1134)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213)	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:118)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)	at org.eclipse.jetty.server.Server.handle(Server.java:549)	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:318)	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:265)	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:97)	at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)	at org.eclipse.jetty.util.thread.Invocable.invokePreferred(Invocable.java:122)	at org.eclipse.jetty.util.thread.strategy.ExecutingExecutionStrategy.invoke(ExecutingExecutionStrategy.java:58)	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:201)	at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:133)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:672)	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:590)	at java.lang.Thread.run(Thread.java:745)