Start the session on rest.php, so it avoids impossible to find side effects....

Start the session on rest.php, so it avoids impossible to find side effects. Trust me, I lost hours on that one: civi needs a session.

extern/rest.php

@@ -29,6 +29,7 @@ require_once '../civicrm.config.php';
 require_once 'CRM/Core/Config.php';
 $config = CRM_Core_Config::singleton();
 
+session_start();
 require_once 'CRM/Utils/REST.php';
 $rest = new CRM_Utils_REST();