Why do I keep getting this message when trying to export my game to signed release apk?

Error: Failed to load signer "signer #1": tmp/68587f51-e13c-45b9-8a6d-a8655a9f227c entry "keystore" does not contain a key.

I think this is because I'm typing in the wrong alias and I don't remember my keystore alias so how would I go about recovering my keystore alias because I already know the password. Also if I exported to a signed android app bundle the message just says: error.

Its better to keep your keystore, alias and passphrase in multiple locations as a backup. The keystore and password is not recoverable once you lose it and then you will not be able to update your apps.