async function liveActivePing(cameraSelector) {
  logger.debug(`Camera streaming: Received active ping for camera ${cameraSelector}`);
  const liveStream = this.liveStreams.get(cameraSelector);
  if (!liveStream) {
    throw new NotFoundError('Stream not found');
  }
  this.liveStreams.set(cameraSelector, {
    ...liveStream,
    lastPing: Date.now(),
  });
}
@description Send a ping to tell Gladys the live is still active.
@param {string} cameraSelector - The camera still active.
@example
liveActivePing(cameraSelector);