wp config error?

Hello. I received a wp-config error?
“A wp-config.php already exists in this location. This error prevents users from accidentally overwriting the wrong directories contents. You have two options:

Empty this root directory except for the package and installer and try again.
Delete just the wp-config.php file and try again. This will over-write all other files in the directory.”

Do I delete all files but the package and installer in filezilla?

thank you!!