No (suitable) public key for encryption to [a provided recipient email address] found

[ajaysethi8789]

When I'm adding the pub and secret keys of sender in KeyringConfig and i can't add more than two keys as per the function (withKeyRingsFromFiles)

But seems like it is expecting three keys (sender's public, private key and receiver public key) to be added in KeyringConfig but function doesn't allow us to add more than two keys, getting the following error "org.bouncycastle.openpgp.PGPException: No (suitable) public key for encryption to receiver@gmail.com found".

Should it be asking for the receiver public key in the local directory of the sender? if yes, please suggest how can i specify the public key of a receiver also?