How will i sign my android app bundle in google play

I just was about to release my unity .aab game but an error occurs in google play that, “Your Android App Bundle is signed with the wrong key. Ensure that your App Bundle is signed with the correct signing key and try again:SHA1: XX:XX:XX:XX”
with this message it is not accepting the bundle even my key store variable is correct.
what should I do now?

Try

1.Generate an upload key and keystore