ROS dynamic_reconfigure::Client::setConfiguration could not set configuration

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I'm writing a simple client dynamic_reconfigure.If the batch_size is equal to 20, then client should reset one parameter in config to 0.0. However, while running the node, the node throws the error [ WARN] [1657666570.407288065]: Could not set configuration. Below is my code.

void adjuster_callback(const hc::HcNodeConfig& data) {
   std::cout << "this is a callback function" << std::endl;
}

int main(int argc, char ** argv) {
    int batch_size = 0;
    ros::init(argc, argv, "adjuster");
    hc::HcNodeConfig config;
    dynamic_reconfigure::Client<hc::HcNodeConfig> client("hc", adjuster_callback);
    ros::Duration d(2);
    client.getDefaultConfiguration(config, d);
    ros::Rate loop_rate(10);
    while (ros::ok()) {
        batch_size += 1;
        if (batch_size == 10) {
            config.angle = 0.0;
            client.setConfiguration(config);
            batch_size = 0;
        }
        ros::spinOnce();
        loop_rate.sleep();
   }
   return 0;
}