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java.lang.NullPointerException: no model found by name sub1.ID3 at ru.runa.wfe.graph.history.model.DiagramModel.getNodeNotNull(DiagramModel.java:58)[wfe-core-4.1.0.jar:4.1.0-${svn.revision}] at ru.runa.wfe.graph.history.GraphHistoryBuilder.createDiagram(GraphHistoryBuilder.java:198)[wfe-core-4.1.0.jar:4.1.0-${svn.revision}] at ru.runa.wfe.execution.logic.ExecutionLogic.getProcessHistoryDiagramElements(ExecutionLogic.java:307)[wfe-core-4.1.0.jar:4.1.0-${svn.revision}]