Update app.py

app.py

@@ -31,6 +31,7 @@ def generate_demo_gif(exp=2, progress=gr.Progress(track_tqdm=True)):
 
     print("STDOUT:", result.stdout)
     print("STDERR:", result.stderr)
+    print("Exists?", os.path.exists("/tmp/output.gif"))  # ⬅️ Add it here
 
     # Check and display result
     if result.returncode == 0 and os.path.exists(OUTPUT_GIF):