Argon2 hash key output is over 32 bytes

Question

I am learning cryptography and started a simple project where I intend on using Argon2 to hash my password with a randomly generated salt and then use this hash to generate cipher text and encrypt data using AES algorithm.

However, my hash always seems to be over 32 bytes.

For Hash key generation, I use the following:

ph = PasswordHasher(hash_len=32, salt_len=16)
hash = ph.hash(key)

When I print this, I find the output that looks like this:

Hash:  $argon2id$v=19$m=65536,t=3,p=4$BkGV9OL8x2VlYhPyj7efVA$5U6H89HJb+6IkQxYYWkp9CQd42dEXdiSwKfdB0PnEZI
Hashed password:  5U6H89HJb+6IkQxYYWkp9CQd42dEXdiSwKfdB0PnEZI
Salt:  BkGV9OL8x2VlYhPyj7efVA

Length of Password: 43
Length of Salt: 22

I am able to verify this password without any issue as follows:

ph.verify(hash, key)

I try to encrypt data using AES as follows:

cipher = AES.new(key, AES.MODE_EAX)
nonce = cipher.nonce
ciphertext, tag = cipher.encrypt_and_digest(data)

This always results in an error:

ValueError: Incorrect AES key length (43 bytes)

Why does the length of the key always exceed 32 bytes even when I explicitly specify it in the PasswordHasher Am I missing something?