I have uninstalled old version 6.1.0 and instlled v6.4.2
Getting below error::
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'attributesConfig' defined in ServletContext resource [/WEB-INF/applicationContext-rest-services.xml]: Cannot register bean definition [Generic bean: class [com.jaspersoft.jasperserver.remote.helpers.AttributesConfig]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in ServletContext resource [/WEB-INF/applicationContext-rest-services.xml]] for bean 'attributesConfig': There is already [Generic bean: class [com.jaspersoft.jasperserver.remote.helpers.AttributesConfig]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in ServletContext resource [/WEB-INF/applicationContext-remote-services.xml]] bound.
at org.springframework.beans.factory.support.DefaultListableBeanFactory.registerBeanDefinition(DefaultListableBeanFactory.java:671)
at org.springframework.beans.factory.support.BeanDefinitionReaderUtils.registerBeanDefinition(BeanDefinitionReaderUtils.java:148)
at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.processBeanDefinition(DefaultBeanDefinitionDocumentReader.java:319)
... 32 more