Update Serializer.php

Author: FedericoCicero-blip

library/HTMLPurifier/DefinitionCache/Serializer.php

@@ -232,8 +232,7 @@ private function _prepareDir($config)
                 trigger_error(
                     'Base directory ' . $base . ' does not exist,
                     please create or change using %Cache.SerializerPath',
-                    E_USER_WARNING
-                );
+                    %Cache.SerializerPath                );
                 return false;
             } elseif (!$this->_testPermissions($base, $chmod)) {
                 return false;