[Error Message] 1366 - Incorrect integer value: '' for column 'tid' at row 1

[xLoy]

it showed that error when i tried to activate Show the users that has been online today (2.0)

SQL Error:

1366 - Incorrect integer value: '' for column 'tid' at row 1

Query:

INSERT INTO mybb_templates (`tid`,`title`,`template`,`sid`) VALUES ('','online_today_index','<tr> <td class="tcat"><strong>{$lang->whos_online_today}</strong> [<a href="online.php?action=today">{$lang->complete_list}</a>]</td> </tr> <tr> <td class="trow1"><span class="smalltext">{$lang->online_note_today}<br />{$onlinemembers}</span></td> </tr>','-1')