Spring Boot Admin results in error 500

Hi

I am trying to register a client with admin server using client starter. Following is the version of jar being used: spring-boot-admin-server-1.3.1.jar spring-boot-admin-server-ui-1.3.1.jar spring-boot-admin-starter-client-1.3.1.jar spring-boot-1.3.5.RELEASE.jar Spring 4.2.4

Server is up and I am able to view the UI.

Following error is receiver when trying to register a client:

SEVERE: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.IllegalArgumentException: statusInfo must not be null!] with root cause
java.lang.IllegalArgumentException: statusInfo must not be null!
    at org.springframework.util.Assert.notNull(Assert.java:115)
    at de.codecentric.boot.admin.model.Application.<init>(Application.java:42)
    at de.codecentric.boot.admin.model.Application$Builder.build(Application.java:133)

Following is the application.properties for the client

endpoints.health.enabled=true
endpoints.health.sensitive=false
management.health.status.order=UP,DOWN,UNKNOWN
server.port = 9000
management.port: 9000
management.address: 127.0.0.1
management.contextPath=/admin
spring.boot.admin.url=http://localhost:8080
info.version=@project.version@

It is a very simple code for test:

Server:

@SpringBootApplication
@EnableAdminServer
public class SpringAdmin {

            public static void main(String[] args) {
                SpringApplication.run(SpringAdmin.class, args);
            }

        }

Client:

package test;

import org.springframework.beans.factory.annotation.Autowired;
@Controller
@EnableAutoConfiguration
@ComponentScan(basePackages = "test")
public class SpringBoot {

    @Autowired
    CountService service;

        @RequestMapping(value = "/hello",method = RequestMethod.GET)
        @ResponseBody
        String home() {
            service.exampleMethod();
            return "hello.jsp";
        }

       public static void main(String[] args) throws Exception {
            //System.setProperty("spring.jmx.enabled", "false");
            //System.setProperty("server.port", "8081");
            SpringApplication.run(SpringBoot.class);

        }


       @Bean
        public static Endpoint exampleEndpoint() {
            return new Endpoint<String>() {
                @Override
                public String getId() {
                    return "hello";
                }

                @Override
                public boolean isEnabled() {
                    return true;
                }

                @Override
                public boolean isSensitive() {
                    return false;
                }

                @Override
                public String invoke() {
                    return "hello";
                }
            };
        }

}

[VineetJT]

Seems the issue happens only when using port 8080 on server. I changed to other port and seems to resolve the issue.

On a side note, is there any way to use JAVA 6 with admin and client? Right now we are using JRE6 and it seems to be compatible class error.

[koktoghay]

I also encountered the same problem.I upgraded the package version to the same version and solved the problem.All version is 1.3.3 spring-boot-admin-server-1.3.3.jar spring-boot-admin-server-ui-1.3.3.jar spring-boot-admin-starter-client-1.3.3.jar