message: Add start_instance error handling
diff: @@ -202,6 +202,8 @@ class ManagedAccessKeyRepository implements AccessKeyRepository {
  ssInstance.onInboundBytes(
  this.handleInboundBytes.bind(this, accessKeyJson.id, accessKeyJson.metricsId));
  this.ssInstances.set(accessKeyJson.id, ssInstance);
  + }).catch((error) => {
  + logging.error(`Failed to start Shadowsocks instance for key ${accessKeyJson.id}: ${error}`);
  });
  }
  