My solder page is "http://mydomain/solder/public/index.php" but when i try to use "http://mydomain/solder/public/index.php/api/" it tells me, that "There was a problem validating your Solder URL".
Also I keep getting some error with "Class SymfonyComponentHttpFoundationCookie does not exist" when I try to get to the Mod Library or to Manage Users...