Azure Function-pgp encrypt file stored in blob storage

Question

I am using below code to pgp encrypt a blob file. However it is returning error that I am passing multiple value for recipients but 'key_fingerprint' contains only one and correct fingerprint value. I have tried gpg.encrypt_file() option in azure function but it says there is no attribute gpg.encrypt_file() but it works fine in vs code. I have python 3.11 and gpg 2.4 version. I am not sure what is wrong here. kindly suggest.

encrypted_data = gpg.encrypt(downloadblob_data, recipients=[key_fingerprint], armor=False)