Decryption Error of Folder aes-256-cbc in node.js - encryption

Question

i have tried to encrypt the folder using aes-256-cbc in nodejs. Encryption works fine but decryption of files shows is error
Error: error:1C800064:Provider routines::bad decrypt at Decipheriv.final (node:internal/crypto/cipher:193:29) at /Users/vikasrushi/ipfs-encryption/utils.js:56:33 at FSReqCallback.readFileAfterClose [as oncomplete] (node:internal/fs/read_file_context:68:3) { library: 'Provider routines', reason: 'bad decrypt', code: 'ERR_OSSL_BAD_DECRYPT' }
These code i have used to encrypt the files and decryption function throws error. instead of random iv i took constant and for password too. am i missing something
const fs = require("fs");
const algorithm = "aes-256-cbc";
const password = Buffer.from(
"bf3c199c2470cb477d907b1e0917c17bbf3c199c2470cb477d907b1e0917c17b",
"hex"
); // set random encryption key
const iv = Buffer.from("5183666c72eec9e45183666c72eec9e4", "hex"); // set random initialisation vectors
const encryptFolder = (folderPath) => {
// const hash = crypto.createHash("sha256").update(password).digest();
fs.readdir(folderPath, (err, files) => {
if (err) throw err;
// Encrypt each file in the folder
for (const file of files) {
fs.readFile(`${folderPath}/${file}`, (err, data) => {
if (err) throw err;
// Encrypt the data
console.log(iv);
const cipher = crypto.createCipheriv(algorithm, password, iv);
let encrypted = cipher.update(data, "utf8", "hex");
encrypted += cipher.final("hex");
// Write the encrypted data to a new file
fs.writeFile(`./encrypted/${file}.encrypted`, encrypted, (err) => {
if (err) throw err;
});
});
}
});
};
const decryptFolder = (encryptedFolderPath) => {
// const hash = crypto.createHash("sha256").update(password).digest();
// const iv = crypto.randomBytes(16); // not working
// Read the encrypted folder contents
fs.readdir(encryptedFolderPath, (err, encryptedFiles) => {
if (err) throw err;
// Decrypt each file in the folder
for (const encryptedFile of encryptedFiles) {
fs.readFile(
`${encryptedFolderPath}/${encryptedFile}`,
(err, encryptedData) => {
if (err) throw err;
// Decrypt the data
const decipher = crypto.createDecipheriv(algorithm, password, iv);
let decrypted = decipher.update(encryptedData, "hex", "utf8");
decrypted += decipher.final("utf8");
fs.writeFile(
`./decrypted/${encryptedFile.replace(".encrypted", "")}`,
decrypted,
(err) => {
if (err) throw err;
}
);
}
);
}
});
};
module.exports = { encryptFolder, decryptFolder };