I’m working on NodeJs server to connect with google gemini ai api

everything is good except when i add the safety parameter as the documentation say’s here

here is my code

const express = require('express');
require('dotenv').config();
const router = express.Router();
const { GoogleGenerativeAI, HarmBlockThreshold, HarmCategory } = require('@google/generative-ai');
const GEMINI_KEY = process.env.GEMINI_AI_KEY
const GEMINI_MODEL = process.env.GEMINI_MODEL
const genAI = new GoogleGenerativeAI(GEMINI_KEY);

router.post('/text-generation', async (req, res) => {
    const { prompt } = req.body; // Corrected variable name
    try {
        // Check if prompt is provided
        if (!prompt) {
            return res.status(400).json({ error: 'Enter prompt text before generating.' });
        }
        const safetySettings = [
            {
                category: HarmCategory.HARM_CATEGORY_HARASSMENT,
                threshold: HarmBlockThreshold.BLOCK_ONLY_HIGH,
            },
        ];
        const model = genAI.getGenerativeModel({ model: GEMINI_MODEL, safetySettings });

        const result = await model.generateContent(prompt);
        const response = await result.response.text();

        res.status(200).json({ success: true, code: 100, data: response });
    } catch (error) {
        res.status(500).json({ success: false, code: 200, data: error });

        console.error(error);
        // res.status(500).json({ error: 'Failed to generate text' });
    }
});

module.exports = router;

now when i make a post request i get this response

{
    "success": false,
    "code": 200,
    "data": {
        "status": 400,
        "statusText": "Bad Request"
    }
}

i tried most of the solutions online and i tried google documentations