Update app.py

app.py

@@ -11,6 +11,8 @@ max_textboxes = 5
 
 def process_youtube_url(url, language="en"):
     try:
+        if url = "" and language = "":
+            return *["I'm waiting..." for _ in range(max_textboxes)],[],"",0,""
         loader = YoutubeLoader.from_youtube_url(
             youtube_url=url,
             add_video_info=True,