when i test the demo code,the console return NullPointerException

[mircoteam]

            org.apache.dubbo.config.AbstractInterfaceConfig#useRegistryForConfigIfNecessary

ConfigCenterConfig cc = configManager.getConfigCenter().orElse(new ConfigCenterConfig());
if (rc.getParameters() != null) {
Map<String, String> configParams = cc.getParameters() == null ? new HashMap<>() : cc.getParameters();
configParams.putAll(rc.getParameters());
cc.setParameters(configParams);
}
cc.getParameters().put(org.apache.dubbo.remoting.Constants.CLIENT_KEY,rc.getClient());

when rc.getParameters() is null then cc.getParameters() is null, it`s will show NullPointerException.

please check cc.getParameters() is null and init before use it.

[chickenlj]

#5219

Thanks for reporting, please focus on this issue and help test

[ZhiQinIsZhen]

我也刚刚替换成2.7.4，也出现了同样的问题