I am creating the data transit bundle OBA for a recent updated GTFS and I'am getting the exception below:
2020-09-14 01:31:59,960 ERROR [FederatedTransitDataBundleCreatorMain.java:220] : error building transit data bundle
java.lang.IllegalStateException: error invoking refresh method=public void org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl.start() on target object=org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl@3f67f5ff
at org.onebusaway.container.refresh.RefreshServiceImpl.invokePair(RefreshServiceImpl.java:133)
at org.onebusaway.container.refresh.RefreshServiceImpl.refresh(RefreshServiceImpl.java:45)
at org.onebusaway.transit_data_federation.bundle.tasks.CalendarServiceDataTask.run(CalendarServiceDataTask.java:90)
at org.onebusaway.transit_data_federation.bundle.FederatedTransitDataBundleCreator.run(FederatedTransitDataBundleCreator.java:192)
at org.onebusaway.transit_data_federation.bundle.FederatedTransitDataBundleCreatorMain.run(FederatedTransitDataBundleCreatorMain.java:218)
at org.onebusaway.transit_data_federation.bundle.FederatedTransitDataBundleCreatorMain.main(FederatedTransitDataBundleCreatorMain.java:91)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at org.onebusaway.container.refresh.RefreshServiceImpl.invokePair(RefreshServiceImpl.java:131)
... 5 more
Caused by: java.lang.NullPointerException
at org.onebusaway.transit_data_federation.impl.transit_graph.TransitGraphDaoImpl.getAllBlocks(TransitGraphDaoImpl.java:121)
at org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl.determineAllServiceIds(ExtendedCalendarServiceImpl.java:442)
at org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl.cacheServiceDatesForServiceIds(ExtendedCalendarServiceImpl.java:415)
at org.onebusaway.transit_data_federation.impl.ExtendedCalendarServiceImpl.start(ExtendedCalendarServiceImpl.java:96)
... 10 more
2020-09-14 01:31:59,960 INFO [AbstractApplicationContext.java:1002] : Closing org.springframework.context.support.GenericApplicationContext@11531931: startup date [Mon Sep 14 01:31:30 EDT 2020]; root of context hierarchy
It seems the _transitGraphDao object in ExtendedCalendarServiceImpl is null. What may be causing this error?