Lastest snapshot of gwc-s3-plugin.zip contains `jackson-core-2.10.1.jar` while the Geoserver 2.16.0 distribution contains `jackson-core-2.9.9.jar`. That causes VerifyErrors at start is the Geoserver is unable to boot up.
Shouldn't there be compatibility on dependencies for 2.16 branch?
Alternatively: Can you advise which files from the zip file should be extracted, and which not? Or perhaps it's safe to upgrade geoserver dependencies? and remove old versions of libraries?