Message: Invalid argument supplied for foreach() for Flickr

Question

I recently switched our site to a different server for ExpressionEngine and all of a sudden I'm getting errors when trying to access a drop down list of Flickr albums.

This is what the error says:

A PHP Error was encountered Severity: Warning Message: Invalid argument supplied for foreach() Filename: flickr_sets/ft.flickr_sets.php Line Number: 35

Here is the code for the php file...line 35-37

foreach($sets['photoset'] as $photoset) {
$photo_sets[$photoset['id']] = $photoset['title'];
}

I haven't changed anything but am wondering if I need to reauthorize the token since I switched to a different server.

Anyone has any idea?