[23/07/19 05:30:24:024 CST] main ERROR integration.MetadataReportService:  [DUBBO] publishProvider getServiceDescriptor error. providerUrl: dubbo://30.5.121.125:20880/org.apache.dubbo.samples.generic.call.api.HelloService?anyhost=true&application=generic-impl-provider&deprecated=false&dubbo=2.0.2&dynamic=true&generic=true&interface=org.apache.dubbo.samples.generic.call.api.HelloService&methods=*&register=true&release=2.7.3&side=provider, dubbo version: 2.7.3, current host: 30.5.121.125
java.lang.ClassNotFoundException: org.apache.dubbo.samples.generic.call.api.HelloService
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:264)
	at org.apache.dubbo.metadata.integration.MetadataReportService.publishProvider(MetadataReportService.java:97)
	at org.apache.dubbo.config.ServiceConfig.doExportUrlsFor1Protocol(ServiceConfig.java:623)
	at org.apache.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:457)
	at org.apache.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:415)
	at org.apache.dubbo.config.ServiceConfig.export(ServiceConfig.java:378)
	at org.apache.dubbo.samples.generic.call.GenericImplProvider.main(GenericImplProvider.java:48)

Reproduce by running dubbo-samples-generic-impl
Map<String, String> params = StringUtils.parseQueryString(query);
                            String group = params.get("group");
                            String version = params.get("version");
                            
                            
                            String name = serviceName;
                            if (group != null && group.length() > 0) {
                                name = group + "/" + name;
                            }
                            if (version != null && version.length() > 0) {
                                name = name + ":" + version;
                            }
                            Map<String, String> newUrls = newNotify.get(name);
                            if (newUrls == null) {
                                newUrls = new HashMap<String, String>();
                                newNotify.put(name, newUrls);
                            }
                            newUrls.put(url, StringUtils.toQueryString(params));
                        }
                    }
                } else {
                    newNotify.put(serviceName, serviceUrls);
                }
            }
            return newNotify;
        }
        return notify;
    }
    
    public static List<String> revertForbid(List<String> forbid, Set<URL> subscribed) {