update error

vggsfm_code/vggsfm/utils/tensor_to_pycolmap.py

@@ -126,7 +126,13 @@ def pycolmap_to_batch_matrix(reconstruction, device="cuda"):
     """
 
     num_images = len(reconstruction.images)
-    max_points3D_id = max(reconstruction.point3D_ids())
+
+    try:
+        max_points3D_id = max(reconstruction.point3D_ids())
+    except Exception as e:
+        raise ValueError("Reconstruction failed") from e
+
+
     points3D = np.zeros((max_points3D_id, 3))
 
     for point3D_id in reconstruction.points3D: