Fix notice CrawlController lookups, a=chris

diff --git a/src/controllers/CrawlController.php b/src/controllers/CrawlController.php
index 91d5e735c..ba9cc7d3b 100644
--- a/src/controllers/CrawlController.php
+++ b/src/controllers/CrawlController.php
@@ -241,6 +241,10 @@ class CrawlController extends Controller implements CrawlConstants
             unserialize(L\webdecode($_REQUEST["arg"]));
         $our_lookups = [];
         foreach ($lookups as $lookup => $lookup_info) {
+            if (!is_array($lookup_info) || empty($lookup_info)) {
+                $our_lookups[$lookup] = [];
+                continue;
+            }
             if (count($lookup_info) == 2 && ($lookup_info[0][0] === 'h'
                 || $lookup_info[0][0] === 'r'
                 || $lookup_info[0][0] === 'g')) {
diff --git a/src/models/Model.php b/src/models/Model.php
index 5b8a10d0c..89a2424b7 100755
--- a/src/models/Model.php
+++ b/src/models/Model.php
@@ -275,7 +275,7 @@ class Model implements CrawlConstants
         } else {
             $page[self::DESCRIPTION] = mb_substr($page[self::DESCRIPTION],
                 0, $description_length);
-            $test_snippet = preg_replace('/[^\s]+$/', "",
+            $test_snippet = preg_replace('/[^\s]+$/u', "",
                 $page[self::DESCRIPTION]);
             if(!empty($test_snippet)) {
                 $page[self::DESCRIPTION] = $test_snippet;