The below error is returned when trying to run a report:
SEVERE: An error happened while running the report. Cause: java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java:396) at java.util.Hashtable.put(Hashtable.java:396) at java.util.Hashtable.putAll(Hashtable.java:470) at org.eclipse.birt.data.engine.executor.DataSource. <init>(DataSource.java:76)at org.eclipse.birt.data.engine. executor.DataSourceFactory. getDataSource(DataSourceFactory.java:75) at org.eclipse.birt.data.engine.impl. PreparedOdaDSQueryOdaDSQueryExecutor.getDataSource (PreparedOdaDSQuery.java:241)
Solution: