Update app.py

app.py

@@ -225,7 +225,7 @@ def generate_video(model_name: str, text: str, video_path: str,
         yield "Invalid model selected.", "Invalid model selected."
         return
 
-Nm    if video_path is None:
+    if video_path is None:
         yield "Please upload a video.", "Please upload a video."
         return