Demo project `dubbo-samples-annotation` start failed. What should I do?

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## Ask your question here

I try to start `dubbo-samples-annotation` project, but failed.

First, I start `AnnotationProviderBootstrap`, that is ok.
and output log :
```text
[24/02/23 12:38:13:013 CST] main INFO server.Server: [DUBBO] qos-server bind localhost:22222, dubbo version: 3.2.0-beta.5-SNAPSHOT, current host: 192.168.31.232
```

And then, I try to start `AnnotationConsumerBootstrap`, it's failed! The output log below:
```text
[24/02/23 12:51:28:028 CST] DubboShutdownHook WARN integration.RegistryProtocol: [DUBBO] null, dubbo version: 3.2.0-beta.5-SNAPSHOT, current host: 192.168.31.232, error code: 99-0. This may be caused by unknown error in registry module, go to https://dubbo.apache.org/faq/99/0 to find instructions.
java.lang.NullPointerException
at org.apache.dubbo.registry.integration.RegistryProtocol$ExporterChangeableWrapper.unexport(RegistryProtocol.java:913)
at org.apache.dubbo.registry.integration.RegistryProtocol$DestroyableExporter.unexport(RegistryProtocol.java:695)
at org.apache.dubbo.config.ServiceConfig.unexport(ServiceConfig.java:195)
at org.apache.dubbo.config.deploy.DefaultModuleDeployer.postDestroy(DefaultModuleDeployer.java:241)
at org.apache.dubbo.rpc.model.ModuleModel.onDestroy(ModuleModel.java:109)
at org.apache.dubbo.rpc.model.ScopeModel.destroy(ScopeModel.java:115)
at org.apache.dubbo.rpc.model.ApplicationModel.onDestroy(ApplicationModel.java:260)
at org.apache.dubbo.rpc.model.ScopeModel.destroy(ScopeModel.java:115)
at org.apache.dubbo.config.DubboShutdownHook.doDestroy(DubboShutdownHook.java:123)
at org.apache.dubbo.config.DubboShutdownHook.run(DubboShutdownHook.java:78)
```

Reproduce the sequence using AnnotationProviderBootstrap and AnnotationConsumerBootstrap, then start with the error-code 99-0 FAQ and the stack trace at org.apache.dubbo.registry.integration.RegistryProtocol. Inspect the unexport path referenced at RegistryProtocol.java:913 and the shutdown calls through ServiceConfig and DefaultModuleDeployer. Done means identifying why the consumer startup fails and documenting a verified resolution.

Written by the indexing model from the issue text.