Update app.py

app.py

@@ -36,7 +36,7 @@ def process_images(files):
         "-W", "ignore",
         "./coarse_init_infer.py",
         "--img_base_path", hashdir_path,
-        "--n_views", n_view,
+        "--n_views", str(n_view),
         "--focal_avg",
     ]