[BUGFIX] fix Invalid argument supplied for foreach()

Classes/Controller/VimeoController.php

@@ -54,16 +54,18 @@ class VimeoController extends ActionController {
 			return;
 		}
 
-		foreach ($response['items'] as &$item) {
-
-			/*
-			 * Check if link is of the form "https://vimeo.com/123456789", not "https://vimeo.com/username/videoname".
-			 * Just checks if the end of `link` is the same as `videoId`, and if not, it replaces `link`.
-			 * This is needed as a workaround so that glightbox can detect the video as a vimeo video correctly in the frontend.
-			 */
-			$endOfLink = substr($item['link'], -strlen($item['videoId']));
-			if (!((int) $endOfLink === $item['videoId'])) {
-				$item['link'] = strstr($item['link'], '.com/', true) . '.com/' . $item['videoId'];
+		if (is_array($response['items'])) {
+			foreach ($response['items'] as &$item) {
+
+				/*
+				 * Check if link is of the form "https://vimeo.com/123456789", not "https://vimeo.com/username/videoname".
+				 * Just checks if the end of `link` is the same as `videoId`, and if not, it replaces `link`.
+				 * This is needed as a workaround so that glightbox can detect the video as a vimeo video correctly in the frontend.
+				 */
+				$endOfLink = substr($item['link'], -strlen($item['videoId']));
+				if (!((int) $endOfLink === $item['videoId'])) {
+					$item['link'] = strstr($item['link'], '.com/', TRUE) . '.com/' . $item['videoId'];
+				}
 			}
 		}