org.springframework.web.servlet-3.0.1.RELEASE-A.jar

Error creating bean with name 'org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#0' defined in ServletContext resource [/WEB-INF/springMVC-servlet.xml]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController' defined in ServletContext resource [/WEB-INF/springMVC-servlet.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'error_view' of bean class [com.demo.controller.action.AuthorAction]: Bean property 'error_view' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?