updated path

app.py

@@ -218,7 +218,7 @@ def create_scene(mesh_path, dicts, plane_idx):
     newplane = dicts[plane_idx]['plane']
     newplane.visual.vertex_colors = np.tile([100, 100, 100, 100], (4, 1))
     scene = trimesh.Scene([mesh, newplane])
-    temp_file = f"/tmp/{mesh_path.split['/'][-1].split('.')[0]}_{plane_idx}.obj"
+    temp_file = f"/tmp/scene_{plane_idx}.obj"
     scene.export(temp_file)
     return temp_file