Bluetooth "packet too big "

Need Help With My Project
1

error

Hello !!
I am using Arduino Nano for my project and i want to receive sensors reading via Bluetooth
i used the example code. i am trying to connect it from blynk app but i am getting an error as " Packet too big "
why am i getting this error ? and is there any alternatives to get the sensors readings?
this is the code i’m using

#define BLYNK_USE_DIRECT_CONNECT
#define BLYNK_PRINT Serial


// You could use a spare Hardware Serial on boards that have it (like Mega)
#include <BlynkSimpleSerialBLE.h>
#define BLYNK_MAX_READBYTES 256

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = " i wrote my Auth";

void setup()
{
  // Blynk will work through Serial
  // 9600 is for HC-06. For HC-05 default speed is 38400
  // Do not read or write this serial manually in your sketch
  Serial.begin(38400);
  Serial.println("Setting up");
  Blynk.begin(Serial, auth);

  // It never gets here
  Serial.println("Connected");
}

void loop()
{
  Blynk.run();
}
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