Bad Request Error (arduino uno wifi firebase)

A friend and I are working on a coding project and we are using an Arduino Wifi Rev 2 to connect to firebase. As we were doing so, we ran into a bit of an issue, but we can't figure it out. So, we simplified our code into just the connection part of it. Still, when we run our code, the error "bad request" returns. Could you help us out?

#include <ArduinoJson.h>
#include <Firebase_Arduino_WiFiNINA_HTTPClient.h>
#include <Firebase_Arduino_WiFiNINA.h>
#define FIREBASE_HOST "https://arduino-nitrate-fb-v1-default-rtdb.asia-southeast1.firebasedatabase.app"
#define FIREBASE_AUTH "8hH7udfKry2GQcjBSd3Pr2g3XQCnpIcGD7kRERC8"
#define WIFI_SSID "Dr.Asg HT-2.4g"
#define WIFI_PASSWORD "amudhan12"
FirebaseData firebaseData;
String path = "/IMU_LSM6DS3";
String jsonData;

void setup()
{
  Serial.begin(9600);
  delay(1000);
  Serial.println();
  Serial.println(" done");
  Serial.print("Connecting to WiFi…");
  int status = WL_IDLE_STATUS;
  while (status != WL_CONNECTED) {
    status = WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    Serial.print(".");
    delay(300);
  }
  Serial.print(" IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();
  Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH, WIFI_SSID, WIFI_PASSWORD);
  Firebase.reconnectWiFi(true);
}

void loop()
{
  uploadData();
  delay(2000);
}

void uploadData()
{

  Serial.println(firebaseData.dataPath() + " = " + jsonData);
// Push data using pushJSON
  jsonData = "{\"parent_001\":\"parent 001 text\", \"parent 002\":{\"child_of_002\":123.456}}";
  if (Firebase.pushJSON(firebaseData, path + "/test/append", jsonData)) {
    Serial.println(firebaseData.dataPath()); //Should be "/test/append"
  //New created key/name
  Serial.println(firebaseData.pushName());
  //Absolute path of new appended data
    Serial.println(firebaseData.dataPath() + "/"+ firebaseData.pushName());
  }
  else {
    Serial.println("Error: " + firebaseData.errorReason());
  }   
}

mobizt / Firebase-Arduino-WiFiNINA

Bad Request Error (arduino uno wifi firebase) #23