fix(authentication): Fix issues when users try to logout (#603)

Run set last login information action only when the user exist. Thus preventing running it after the logout method, which was causing an error

app/controllers/concerns/authentication.rb

@@ -3,7 +3,7 @@ module Authentication
 
   included do
     before_action :authenticate_user!
-    after_action :set_last_login_at
+    after_action :set_last_login_at, if: -> { Current.user }
   end
 
   class_methods do