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java.lang.NullPointerException: 	at au.org.emii.geoserver.wfs.response.CSVWithMetadataHeaderOutputFormat.getDataStoreForFeatureCollection(CSVWithMetadataHeaderOutputFormat.java:121)	at au.org.emii.geoserver.wfs.response.CSVWithMetadataHeaderOutputFormat.getMetadataFeatureName(CSVWithMetadataHeaderOutputFormat.java:134)	at au.org.emii.geoserver.wfs.response.CSVWithMetadataHeaderOutputFormat.write(CSVWithMetadataHeaderOutputFormat.java:79)