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java.lang.IllegalArgumentException: Illegal group reference
java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: Illegal group reference	at org.apache.bsf.engines.jython.JythonEngine.exec(JythonEngine.java:146)	at com.sunopsis.dwg.codeinterpretor.SnpScriptingInterpretor.execInBSFEngine(SnpScriptingInterpretor.java:353)	at com.sunopsis.dwg.codeinterpretor.SnpScriptingInterpretor.exec(SnpScriptingInterpretor.java:216)	at oracle.odi.runtime.agent.execution.interpreter.SessionTaskScriptingInterpretor.scripting(SessionTaskScriptingInterpretor.java:171)	at oracle.odi.runtime.agent.execution.SessionTask.scripting(SessionTask.java:105)	at oracle.odi.runtime.agent.execution.cmd.ScriptingExecutor.execute(ScriptingExecutor.java:49)	at oracle.odi.runtime.agent.execution.cmd.ScriptingExecutor.execute(ScriptingExecutor.java:21)	at oracle.odi.runtime.agent.execution.TaskExecutionHandler.handleTask(TaskExecutionHandler.java:52)	at oracle.odi.runtime.agent.execution.SessionTask.processTask(SessionTask.java:206)	at oracle.odi.runtime.agent.execution.SessionTask.doExecuteTask(SessionTask.java:117)	at oracle.odi.runtime.agent.execution.AbstractSessionTask.execute(AbstractSessionTask.java:886)	at oracle.odi.runtime.agent.execution.SessionExecutor$SerialTrain.runTasks(SessionExecutor.java:2227)	at oracle.odi.runtime.agent.execution.SessionExecutor.executeSession(SessionExecutor.java:607)	at oracle.odi.runtime.agent.processor.TaskExecutorAgentRequestProcessor$1.doAction(TaskExecutorAgentRequestProcessor.java:718)	at oracle.odi.runtime.agent.processor.TaskExecutorAgentRequestProcessor$1.doAction(TaskExecutorAgentRequestProcessor.java:611)	at oracle.odi.core.persistence.dwgobject.DwgObjectTemplate.execute(DwgObjectTemplate.java:203)	at oracle.odi.runtime.agent.processor.TaskExecutorAgentRequestProcessor.doProcessStartAgentTask(TaskExecutorAgentRequestProcessor.java:800)	at oracle.odi.runtime.agent.processor.impl.StartSessRequestProcessor.access$1400(StartSessRequestProcessor.java:74)	at oracle.odi.runtime.agent.processor.impl.StartSessRequestProcessor$StartSessTask.doExecute(StartSessRequestProcessor.java:702)	at oracle.odi.runtime.agent.processor.task.AgentTask.execute(AgentTask.java:180)	at oracle.odi.runtime.agent.support.DefaultAgentTaskExecutor$2.run(DefaultAgentTaskExecutor.java:108)	at java.lang.Thread.run(Thread.java:745)