display erors on installer

code/ryzom/tools/server/ryzom_ams/www/html/installer/libsetup.php

@@ -5,6 +5,9 @@
     * @author Daan Janssens, mentored by Matthew Lagoe
     */
     
+    ini_set('display_errors', 1); 
+    error_reporting(E_ALL);
+
     //set permissions
     if(is_writable('../../../../www/login/logs')) {
         echo "failed to get write permissions on logs";