Running resource server complains about `db` variable being `nil`

$ ruby resource_server/app.rb
/home/grfork/.rbenv/versions/3.1.2/lib/ruby/gems/3.1.0/gems/rodauth-oauth-0.9.1/lib/rodauth/features/oauth_management_base.rb:51:in `post_configure': undefined method `extension' for nil:NilClass (NoMethodError)

      db.extension :pagination
        ^^^^^^^^^^
	from /home/grfork/.rbenv/versions/3.1.2/lib/ruby/gems/3.1.0/gems/rodauth-2.23.0/lib/rodauth.rb:62:in `configure'
	from /home/grfork/.rbenv/versions/3.1.2/lib/ruby/gems/3.1.0/gems/roda-3.55.0/lib/roda.rb:296:in `plugin'
	from resource_server/app.rb:15:in `<class:ResourceServer>'
	from resource_server/app.rb:12:in `<main>'