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java.lang.NullPointerException: 	at java.util.Hashtable.put(Hashtable.java:459)	at java.util.Properties.setProperty(Properties.java:166)	at org.postgresql.ds.common.BaseDataSource.setProperty(BaseDataSource.java:1030)	at org.postgresql.ds.common.BaseDataSource.setUrl(BaseDataSource.java:964)	at org.postgresql.osgi.PGDataSourceFactory.configureBaseDataSource(PGDataSourceFactory.java:65)	at org.postgresql.osgi.PGDataSourceFactory.createSimpleDataSource(PGDataSourceFactory.java:127)	at org.postgresql.osgi.PGDataSourceFactory.createDataSource(PGDataSourceFactory.java:149)	at org.ops4j.pax.jdbc.config.impl.DataSourceRegistration.createDs(DataSourceRegistration.java:108)	at org.ops4j.pax.jdbc.config.impl.DataSourceRegistration.(DataSourceRegistration.java:63)	at org.ops4j.pax.jdbc.config.impl.DataSourceFactoryTracker.addingService(DataSourceFactoryTracker.java:42)	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:941)	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:1)	at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)	at org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:183)	at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:318)	at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:261)	at org.ops4j.pax.jdbc.config.impl.DataSourceConfigManager.updated(DataSourceConfigManager.java:80)	at org.apache.felix.cm.impl.helper.ManagedServiceFactoryTracker.updated(ManagedServiceFactoryTracker.java:159)	at org.apache.felix.cm.impl.helper.ManagedServiceFactoryTracker.provideConfiguration(ManagedServiceFactoryTracker.java:93)	at org.apache.felix.cm.impl.ConfigurationManager$UpdateConfiguration.run(ConfigurationManager.java:1772)	at org.apache.felix.cm.impl.UpdateThread.run0(UpdateThread.java:141)	at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:109)	at java.lang.Thread.run(Thread.java:745)