java.lang.NullPointerException: This exception has no message.
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java.lang.NullPointerException:
at com.techtrader.modules.jdo.runtime.StateManagerImpl.replacingBooleanField(StateManagerImpl.java:824)
at com.ysoft.jdo.book.restaurant.MenuItem.jdoReplaceField(MenuItem.java)
at com.techtrader.modules.jdo.runtime.StateManagerImpl.loadFields(StateManagerImpl.java:1127)
at com.techtrader.modules.jdo.runtime.PCleanState.refresh(PCleanState.java:29)
at com.techtrader.modules.jdo.runtime.StateManagerImpl.refresh(StateManagerImpl.java:333)