On Distribution, the following error occurs:

2019-03-06T18:21:24.972Z|[407cd581-4282-4c17-8a0f-3a5f11d63ad5]|qtp1375995437-196|AAI-BAS|[ModelLoader]|||INFO|com.att.eelf.error|org.onap.aai.babel.xml.generator.ModelGenerator#generateArtifacts|BABEL0001I Distribution event: Generating XML for 28 CSAR artifacts.
2019-03-06T18:21:25.041Z|[407cd581-4282-4c17-8a0f-3a5f11d63ad5]|qtp1375995437-196|AAI-BAS|[ModelLoader]|||ERROR|com.att.eelf.error|org.onap.aai.babel.service.GenerateArtifactsServiceImpl#processError|BABEL0004E Error while processing REST request.
Exception NullPointerException: null
at org.onap.aai.babel.xml.generator.data.WidgetConfigurationUtil.setWidgetTypes(WidgetConfigurationUtil.java:79)
at org.onap.aai.babel.parser.ArtifactGeneratorToscaParser.initToscaMappingsConfiguration(ArtifactGeneratorToscaParser.java:165)
at org.onap.aai.babel.xml.generator.api.AaiArtifactGenerator.generateArtifact(AaiArtifactGenerator.java:85)
at org.onap.aai.babel.xml.generator.ModelGenerator.generateArtifacts(ModelGenerator.java:80)
at org.onap.aai.babel.csar.CsarToXmlConverter.generateXmlFromCsar(CsarToXmlConverter.java:74)
at org.onap.aai.babel.service.GenerateArtifactsServiceImpl.generateArtifacts(GenerateArtifactsServiceImpl.java:153)
... 71 more frames