The actual error is hard to actually help fix without seeing the raw code. What I can tell you is under the file controllers/tooltip.php on line 209 you have a PHP error. This error is that you're trying to pass a string into an argument that wants an array. An array would be thrown through a foreach loop while a string is a solid statement.
IE
Code:
$items = "item1";
echo $items;
would be incorrect in this instance and you would be looking for something more along the lines of
Code:
$items = array("item1","item2","item3")
foreach($items as $item) {
//Do Stuff
}
Post some of the original code and it will be easier to diagnose.