@Override
            public void onError(final Throwable throwable) {
                log.error(throwable.getMessage(), throwable);
            }
Collect and process the performance data and error log.
oap-server/server-receiver-plugin/skywalking-browser-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/browser/provider/handler/grpc/BrowserPerfServiceHandler.java