Encryption key changed?

[laztheripper]

Running python 3.7.7 x64

Header Offset: 2108676792
Header Size: 2575321944
Traceback (most recent call last):
  File "c:/Users/x/Desktop/fix.py", line 82, in <module>
    binary_data = decrypt_header()
  File "c:/Users/x/Desktop/fix.py", line 72, in decrypt_header
    decrypted_header = xxtea.decrypt(encrypted_header, key, padding=False)
ValueError: Data length must be a multiple of 4 bytes and must not be less than 8 bytes

I located il2cpp_init() but there's no encryption string, and from looking at the pseudo it appears that the key is assembled on the spot. Although, it is possible I failed to notice the key.

Any help is appreciated, thanks.