[#32855] Stop message: 'end() expects parameter 1 to be array, null given'

```PHP
PHP Warning: end() expects parameter 1 to be array, null given in ../libraries/legacy/exception/exception.php on line 280
```

Every time I need send email globally I get this message.

Tracker: #32855

http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=32855&start=0