Error reporting is shown in the figure above

Results after carefully checking the error information, it is found that:

at demo0929.UserServiceApplication.main(UserServiceApplication.java:12) ~[classes/:na]

The format of package scanning configuration is incorrect, as shown in the following figure:

import org.apache.dubbo.config.spring.context.annotation.DubboComponentScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@DubboComponentScan(basePackages = {"demo0929.service"})
public class UserServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(UserServiceApplication.class,args);
    }
}

Then delete the cache in the target