[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(serviceQuery);
                String name = serviceName;
                int i = name.indexOf('/');
                if (i >= 0) {
                    params.put("group", name.substring(0, i));
                    name = name.substring(i + 1);
                }
                i = name.lastIndexOf(':');
                if (i >= 0) {
                    params.put("version", name.substring(i + 1));
                    name = name.substring(0, i);
                }
                newSubscribe.put(name, StringUtils.toQueryString(params));
            } else {
                newSubscribe.put(serviceName, serviceQuery);
            }
        }
        return newSubscribe;
    }
    public static Map<String, Map<String, String>> revertNotify(Map<String, Map<String, String>> notify) {
        if (notify != null && notify.size() > 0) {
            Map<String, Map<String, String>> newNotify = new HashMap<String, Map<String, String>>();
            for (Map.Entry<String, Map<String, String>> entry : notify.entrySet()) {
                String serviceName = entry.getKey();
                Map<String, String> serviceUrls = entry.getValue();
                if (!serviceName.contains(":") && !serviceName.contains("/")) {
                    if (serviceUrls != null && serviceUrls.size() > 0) {
                        for (Map.Entry<String, String> entry2 : serviceUrls.entrySet()) {
                            String url = entry2.getKey();
                            String query = entry2.getValue();