Amazon web services – Unable to import module 'lambda_function': No module named 'Crypto'

I have following python lambda function

lambda_function.py

from Crypto.Cipher import AES
from Crypto.Util.Padding import pad,unpad
import base64

#CBC with Fix IV

data = 'random text to be encrypted decrypted'
key = 'xxx' #16 char for AES128

#FIX IV
iv =  'yyy'.encode('utf-8') #16 char for AES128

def encrypt(data,key,iv):
        data= pad(data.encode(),16)
        cipher = AES.new(key.encode('utf-8'),AES.MODE_CBC,iv)
        return base64.b64encode(cipher.encrypt(data))

def decrypt(enc,key,iv):
        enc = base64.b64decode(enc)
        cipher = AES.new(key.encode('utf-8'), AES.MODE_CBC, iv)
        return unpad(cipher.decrypt(enc),16)

encrypted = encrypt(data,key,iv)
print('encrypted CBC base64 : ',encrypted.decode("utf-8", "ignore"))

decrypted = decrypt(encrypted,key,iv)
print('decrypted data: ', decrypted.decode("utf-8", "ignore"))

def lambda_handler(event, context):
    encrypt(data, key, iv)

I created a lambda function using runtime python 3.12 and created a layer called custom_encrypt_decrypt and added this layer to the lambda as shown below,

When I try to execute the lambda, it throws error,

"Unable to import module ‘lambda_function’: No module named ‘Crypto’"

Firstly, I found that I have to use pycryptodome python library.

How I uploaded this library to lambda

1. in my local computer I added the library,

   pip install pycryptodome

It added these two folders in my local

2. I selected both the folders and created a .zip folder.
3. uploaded zip folder to custom_encrypt_decrypt layer (and layer is already attached to lambda) – Note: pointing to right layer version.
4. Executed lambda again and getting the same error again n again.

NOTE: If I run this python code locally, it works using same pycryptodome library!