Sending request to ChatGPT from ESP8266 - arduino

Question

I'm trying to send JSON messages to https://api.openai.com/v1/completions using ESP8266. The problem is why when the program is run it always results in bad requests?
This is my code:
#include <WiFiClientSecure.h>
#include <ESP8266HTTPClient.h>
//#include <HttpClient.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ArduinoJson.h> // library untuk menangani JSON
const char* ssid = "DIVA MEDIA";
const char* password = "media1213";
const char* host = "api.openai.com";
const int httpsPort = 443;
WiFiClient client;
void setup() {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
Serial.println("Connected to WiFi");
if (!client.connect(host, httpsPort)) {
Serial.println("Connection failed");
return;
}
HTTPClient http;
WiFiClient client;
// JSON data yang akan dikirim
String jsonData = "{\"prompt\":\"What is the capital of France?\",\"model\":\"text-davinci-002\"}";
// Kirim permintaan ke API OpenAI
http.begin(client,"https://api.openai.com/v1/completions");
http.addHeader("Content-Type", "application/json");
http.addHeader("Authorization", "Bearer api");
int httpCode = http.POST(jsonData);
// Cek kode respon
if (httpCode > 0) {
String response = http.getString();
Serial.println(response);
} else {
Serial.println("Error: " + http.errorToString(httpCode));
}
http.end();
// Delay sebelum mengirim permintaan berikutnya
delay(5000);
}
void loop() {
// nothing to do here
}
and this is error: