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java.net.SocketException: Socket is closed at java.net.DatagramSocket.send(DatagramSocket.java:658) at ummisco.gama.network.udp.UDPConnector.sendToServer(UDPConnector.java:203) at ummisco.gama.network.udp.UDPConnector.send(UDPConnector.java:216) at ummisco.gama.network.skills.NetworkSkill.effectiveSend(NetworkSkill.java:220) at msi.gama.extensions.messaging.MessagingSkill.primSendMessage(MessagingSkill.java:66) at gaml.additions.GamlAdditions$1117.run(GamlAdditions.java:1182) at gaml.additions.GamlAdditions$1117.run(GamlAdditions.java:1) at msi.gaml.statements.PrimitiveStatement.privateExecuteIn(PrimitiveStatement.java:91) at msi.gaml.statements.AbstractStatement.executeOn(AbstractStatement.java:41) at msi.gaml.statements.AbstractStatementSequence.executeOn(AbstractStatementSequence.java:43) at msi.gaml.statements.DoStatement.privateExecuteIn(DoStatement.java:249) at msi.gaml.statements.AbstractStatement.executeOn(AbstractStatement.java:41) at msi.gaml.statements.AbstractStatementSequence.executeOn(AbstractStatementSequence.java:43) at msi.gaml.statements.AbstractStatementSequence.privateExecuteIn(AbstractStatementSequence.java:57) at msi.gaml.architecture.reflex.ReflexStatement.privateExecuteIn(ReflexStatement.java:80) at msi.gaml.statements.AbstractStatement.executeOn(AbstractStatement.java:41) at msi.gaml.statements.AbstractStatementSequence.executeOn(AbstractStatementSequence.java:43) at msi.gaml.architecture.reflex.ReflexArchitecture.executeReflexes(ReflexArchitecture.java:100) at msi.gaml.architecture.reflex.ReflexArchitecture.executeOn(ReflexArchitecture.java:91) at msi.gama.runtime.ExecutionScope.execute(ExecutionScope.java:380) at msi.gama.metamodel.agent.AbstractAgent.doStep(AbstractAgent.java:278) at msi.gama.metamodel.agent.MinimalAgent.doStep(MinimalAgent.java:225) at msi.gama.metamodel.agent.AbstractAgent.step(AbstractAgent.java:249) at msi.gama.runtime.ExecutionScope.lambda$1(ExecutionScope.java:426) at msi.gama.runtime.ExecutionScope.runAndCatch(ExecutionScope.java:459) at msi.gama.runtime.ExecutionScope.pushRunAndCatch(ExecutionScope.java:450) at msi.gama.runtime.ExecutionScope.step(ExecutionScope.java:426) at msi.gama.runtime.concurrent.GamaExecutorService.doStep(GamaExecutorService.java:179) at msi.gama.runtime.concurrent.GamaExecutorService.step(GamaExecutorService.java:154) at msi.gama.metamodel.population.GamaPopulation.stepAgents(GamaPopulation.java:176) at msi.gama.metamodel.population.GamaPopulation.step(GamaPopulation.java:171) at msi.gama.runtime.ExecutionScope.lambda$2(ExecutionScope.java:427) at msi.gama.runtime.ExecutionScope.runAndCatch(ExecutionScope.java:459) at msi.gama.runtime.ExecutionScope.step(ExecutionScope.java:427) at msi.gama.metamodel.agent.GamlAgent.stepSubPopulations(GamlAgent.java:94) at msi.gama.metamodel.agent.AbstractAgent.doStep(AbstractAgent.java:278) at msi.gama.metamodel.agent.MinimalAgent.doStep(MinimalAgent.java:225) at msi.gama.metamodel.agent.AbstractAgent.step(AbstractAgent.java:249) at msi.gama.runtime.concurrent.SimulationRunner.lambda$0(SimulationRunner.java:30) at msi.gama.runtime.concurrent.SimulationRunner.lambda$1(SimulationRunner.java:54) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)