Fix bugs (#457)

* ensure word not empty when lookup

* fix null issue

* fix undefined issue when video failed to add

enjoy/src/renderer/components/stories/story-viewer.tsx

@@ -49,6 +49,7 @@ export const StoryViewer = (props: {
 
   const handleSelectionChanged = debounce(() => {
     const selection = document.getSelection();
+    if (!selection?.anchorNode?.parentElement) return;
     if (!ref.current?.contains(selection.anchorNode.parentElement)) return;
 
     const word = selection

enjoy/src/renderer/components/videos/ted-talks-segment.tsx

@@ -51,6 +51,8 @@ export const TedTalksSegment = () => {
         coverUrl: selectedTalk?.primaryImageSet[0].url,
       })
       .then((record) => {
+        if (!record) return;
+
         if (type === "video") {
           navigate(`/videos/${record.id}`);
         } else {