Update app.py

app.py

@@ -787,7 +787,7 @@ def generate_random_string(length):
     characters = str(ascii_letters + digits)
     return ''.join(random.choice(characters) for _ in range(length))
 
-def add_song_cover_text(img,top_title=None,bottom_title=none):
+def add_song_cover_text(img,top_title=None,bottom_title=None):
 
     if not working: