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

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via compiere by mpparas
, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at org.compiere.model.CalloutInvoice.amt(CalloutInvoice.java:587)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.compiere.model.CalloutEngine.start(CalloutEngine.java:89)
at org.compiere.model.MTab.processCallout(MTab.java:2028)
at org.compiere.model.MTab.dataNew(MTab.java:760)
at org.compiere.apps.APanel.stateChanged(APanel.java:928)
at javax.swing.JTabbedPane.fireStateChanged(JTabbedPane.java:287)

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