Error creating bean with name 'createSpringFoxRestApi' defined in class path resource [com/spring4all/swagger/DocketConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [void]: Factory method 'createSpringFoxRestApi' threw exception; nested exception is java.lang.NullPointerException: Cannot invoke "java.util.List.stream()" because "properties" is null