Update app.py

app.py

@@ -223,7 +223,8 @@ async def fb_post_detail(username: Optional[str] = None, post_id: Optional[str]
                 shares = script_tag.string.split(splitter, 2)[1].split(",")[0]
                 splitter = '"comments":{"total_count":'
                 comments = script_tag.string.split(splitter, 2)[1].split("}")[0]
-                likes = [x.get("count") for x in reactions if x.get("name") == "like"][0]
+                likes = [x.get("count") for x in reactions if x.get("name") == "like"]
+                likes = likes[0] if likes else "0"
 
                 print(total_react, reactions, shares, comments, likes)
             if '"message":{"text":"' in script_tag.string: