java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at weblogic.connector.common.internal.ConnectionPool.getConnection(ConnectionPool.java:1402)
at weblogic.connector.common.internal.ConnectionPoolManager.getConnection(ConnectionPoolManager.java:154)
at weblogic.connector.common.internal.ConnectionManagerImpl.allocateConnection(ConnectionManagerImpl.java:20)
at com.akumiitti.ferret.connector.FerretServerConnectionFactory.getConnection(FerretServerConnectionFactory.java:43)
at com.akumiitti.ferret.client.bean.MTQueueBean.onMessage(MTQueueBean.java:87)
at weblogic.ejb20.internal.MDListener.execute(MDListener.java:237)
at weblogic.ejb20.internal.MDListener.onMessage(MDListener.java:191)
at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:1886)
at weblogic.jms.client.JMSSession.execute(JMSSession.java:1839)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

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