HTTP POST API does not work

Projects Networking, Protocols, and Devices
1

I made local server, and I also checked it worked on Postman..
But It doesn't work by using arduino. httpResponseCode just returns -1. I can't find the problem.
I tested this code by other API from API testing page, but it worked well.

#include <WiFi.h>
#include <HTTPClient.h>

const char* ssid = "id";
const char* password = "pw";

//Your Domain name with URL path or IP address with path
const char* serverName = "http://192.168.219.185:3001/esp/";

unsigned long lastTime = 0;
unsigned long timerDelay = 5000;

void setup() {
  Serial.begin(115200);

  WiFi.begin(ssid, password);
  Serial.println("Connecting");
  while(WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to WiFi network with IP Address: ");
  Serial.println(WiFi.localIP());
 
  Serial.println("Timer set to 5 seconds (timerDelay variable), it will take 5 seconds before publishing the first reading.");
}

void loop() {
  //Send an HTTP POST request every 10 minutes
  if ((millis() - lastTime) > timerDelay) {
    //Check WiFi connection status
    if(WiFi.status()== WL_CONNECTED){
      HTTPClient http;
      
      // Your Domain name with URL path or IP address with path
      http.begin(serverName);

      // Specify content-type header
      http.addHeader("Content-Type", "application/x-www-form-urlencoded");
      // Data to send with HTTP POST
      String httpRequestData = "ip=11.11.11&size=s&isEnd=0";        
      // Send HTTP POST request
      int httpResponseCode = http.POST(httpRequestData);
      
     
      Serial.print("HTTP Response code: ");
      Serial.println(httpResponseCode);
      http.end();
    }
    else {
      Serial.println("WiFi Disconnected");
    }
    lastTime = millis();
  }
}