这是依赖库的版本信息
<curator.recipes.version>4.2.0</curator.recipes.version>
<zookeeper.version>3.4.10</zookeeper.version>
[dubbo-.3.1.6.txt](https://github.com/apache/dubbo/files/11177448/dubbo-.3.1.6.txt)
有没有大佬帮忙看下什么问题导致，万分感谢！！！
private final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(AbstractServiceDiscovery.class);
    private volatile boolean isDestroy;
    protected final String serviceName;
    protected volatile ServiceInstance serviceInstance;
    protected volatile MetadataInfo metadataInfo;
    protected final ConcurrentHashMap<String, MetadataInfoStat> metadataInfos = new ConcurrentHashMap<>();
    protected final ScheduledFuture<?> refreshCacheFuture;
    protected MetadataReport metadataReport;
    protected String metadataType;
    protected final MetaCacheManager metaCacheManager;
    protected URL registryURL;
    protected Set<ServiceInstancesChangedListener> instanceListeners = new ConcurrentHashSet<>();
    protected ApplicationModel applicationModel;
    public AbstractServiceDiscovery(ApplicationModel applicationModel, URL registryURL) {
        this(applicationModel, applicationModel.getApplicationName(), registryURL);
        MetadataReportInstance metadataReportInstance = applicationModel.getBeanFactory().getBean(MetadataReportInstance.class);
        metadataType = metadataReportInstance.getMetadataType();
        this.metadataReport = metadataReportInstance.getMetadataReport(registryURL.getParameter(REGISTRY_CLUSTER_KEY));
    }
    public AbstractServiceDiscovery(String serviceName, URL registryURL) {
        this(ApplicationModel.defaultModel(), serviceName, registryURL);
    }
    private AbstractServiceDiscovery(ApplicationModel applicationModel, String serviceName, URL registryURL) {
        this.applicationModel = applicationModel;
        this.serviceName = serviceName;
        this.registryURL = registryURL;
        this.metadataInfo = new MetadataInfo(serviceName);
        boolean localCacheEnabled = registryURL.getParameter(REGISTRY_LOCAL_FILE_CACHE_ENABLED, true);
        this.metaCacheManager = new MetaCacheManager(localCacheEnabled, getCacheNameSuffix(),
            applicationModel.getFrameworkModel().getBeanFactory()