I give you some more lines, what's above and below the insertion, so you can check the syntax in detail.
markus
[...]
$datetime = format_datetime($project->getUpdatedOn(), $date_format, logged_user()->getTimezone());
echo lang('user date', $project->getUpdatedByCardUrl(), $username, $datetime, clean($project->getUpdatedByDisplayName()));
}
?></td></tr>
<?php }
{ ?>
<tr><td><?php echo lang('unique id') ?>:</td>
<td style="padding-left:10px"><?php
echo $project->getUniqueObjectId();
?></td></tr>
<?php } ?>
<tr><td colspan="2">
<?php echo render_custom_properties($project); ?><br/>
</td></tr>
[...]