Javascript – Error: [Error: ENOENT: no such file or directory, open './1695556319341.mp3']

I’m trying to convert an mp4 file to an mp3 file and then directly upload it to Firebase storage without saving it locally in my machine, How can I do that currently I’m getting an error when I try to do that the error is "Error: [Error: ENOENT: no such file or directory, open ‘./1695556319341.mp3’]" How can i fix this issue with my Node.js code and make things work?

import { initializeApp } from "firebase/app";
import { getStorage, ref, getDownloadURL, uploadBytesResumable } from "firebase/storage";
import serviceAccount from '../firebase/serviceAccountKey';
import { path as ffmpegPath } from '@ffmpeg-installer/ffmpeg';
import ffmpeg from 'fluent-ffmpeg';
import { readFile, unlink } from 'fs/promises';

initializeApp(serviceAccount);
ffmpeg.setFfmpegPath(ffmpegPath);

async function convertMP4ToMP3AndUploadToFirebase(inputPath: any, firebaseStoragePath: any) {
    const date = Date.now();
    const outputPath = `./${date}.mp3`;

    try {
        await ffmpeg(inputPath)
            .output(outputPath)
            .audioCodec('libmp3lame')
            .format('mp3')
            .run();

        const storage = getStorage();
        const storageRef = ref(storage, firebaseStoragePath);

        const fileBuffer = await readFile(outputPath);
        const metadata = { contentType: 'audio/mpeg' };
        const uploadTask = uploadBytesResumable(storageRef, fileBuffer, metadata);
        const snapshot = await uploadTask;
        const downloadURL = await getDownloadURL(snapshot.ref);
        await unlink(outputPath);

        console.log('MP4 file converted to MP3 and uploaded to Firebase Storage successfully!');
        console.log('Download URL:', downloadURL);
    } catch (error) {
        console.error('Error:', error);
    }
}

const inputPath = './video.mp4';
const date = Date.now();
const firebaseStoragePath = `./${date}.mp3`;

convertMP4ToMP3AndUploadToFirebase(inputPath, firebaseStoragePath);