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java.lang.NullPointerException: null	at org.artifactory.addon.yum.YumAddonImpl.populateRpmMetaDataToModel(YumAddonImpl.java:177)	at org.artifactory.addon.yum.YumAddonImpl.getRpmMetadata(YumAddonImpl.java:166)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:497)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:201)	at com.sun.proxy.$Proxy132.getRpmMetadata(Unknown Source)	at org.artifactory.ui.rest.service.artifacts.browse.treebrowser.tabs.rpm.RpmViewService.getArtifactRpmMetadata(RpmViewService.java:54)	at org.artifactory.ui.rest.service.artifacts.browse.treebrowser.tabs.rpm.RpmViewService.execute(RpmViewService.java:34)	at org.artifactory.ui.rest.service.ServiceExecutor.process(ServiceExecutor.java:21)	at org.artifactory.ui.rest.resource.BaseResource.runService(BaseResource.java:76)	at org.artifactory.ui.rest.resource.artifacts.browse.treebrowser.tabs.views.ViewsResource.viewRpm(ViewsResource.java:83)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)