Unexpected problem in creating a tensor on saved model session.

System information

• OS Platform and Distribution: Linux Ubuntu 20.04 x64
• TensorFlow installed from: pip for Python 3.9; Maven for Java
• TensorFlow version : 2.7.0 on Python; 0.3.3 on Java
• Java version : openjdk 11.0.11 2021-04-20
• Python version : 3.9
• CUDA/cuDNN version: cuda_11.5.r11.5/compiler.30411180_0
• GPU model and memory: Nvidia Geforce 960m

Describe the current behavior
The model (a Keras Sequential) is saved using python's "tf.saved_model.save". This model is then loaded in Java using SavedModelBundle from which the related graph is extracted. Then and Ops is created using this graph. When trying to create a tensor using .constant method, an exception is thrown on line 413, /core/op/Constant.java saying

Duplicate node name in graph: 'Const'

I checked my graph nodes using getNodeList of MetaGraph and there is only one node named "Const".

Describe the expected behavior
Successful creation of Tensor as there is no duplicate in the graph nodes.
Code to reproduce the issue

SavedModelBundle model = SavedModelBundle.load("/path/to/model");
Graph graph = model.graph();
MetaGraphDef mataGF = model.metaGraphDef();
var nodes = mataGF.getGraphDef().getNodeList().toArray();
Ops tf = Ops.create(graph);
double[] labels = {0.52,0.65,0.23,0.54,0.65,0.16,0.97};
var input = tf.constant(labels);

Other info / logs
Here is a list of all the 37 nodes. Only node 31 is called Const;

Tái hiện lỗi với SavedModelBundle, Graph, Ops và tf.constant từ issue, sau đó kiểm tra core/op/Constant.java quanh dòng 413 và so sánh các nút đồ thị từ MetaGraphDef với đồ thị được Ops sử dụng. Hoàn tất khi tensor labels được cung cấp có thể được tạo từ đồ thị mô hình đã lưu mà không gặp lỗi nút trùng lặp.