Type inference failed. This indicates an invalid graph that escaped type checking. Error message: INVALID_ARGUMENT

System information.

• Have I written custom code (as opposed to using a stock example script provided in Keras): no
• OS Platform and Distribution (e.g., Linux Ubuntu 16.04): Linux Ubuntu 18.04
• TensorFlow installed from (source or binary): binary
• TensorFlow version (use command below): 2.9
• Python version: 3.7
• Bazel version (if compiling from source): N/A
• GPU model and memory: N/A (CPU)
• Exact command to reproduce:

1. Open the notebook with Google Colab
2. Run all cells
3. View the runtime logs Note: We have to upgrade Tensorflow and Keras to 2.9 manually in the notebook, because the current default version is not the latest one on Colab.

Describe the problem. (Continue the issue from tensorflow_issue_57052) I got a Type inference failed error when running tf.keras.Model.fit() in Tensorflow 2.9 and Keras 2.9. I didn’t see this kind of error in version 2.8 with the identical code. Although the program didn’t crash, I’m afraid that there will be some error in the trained model.

Describe the current behavior. Run tf.keras.Model.fit() and the error Type inference failed shows up.

Describe the expected behavior. The error shouldn’t show up.

Contributing.

• Do you want to contribute a PR? (yes/no): no
• If yes, please read this page for instructions
• Briefly describe your candidate solution(if contributing):

Standalone code to reproduce the issue. Link to notebook: https://drive.google.com/file/d/1k78lpGVthB7nthEkYgUs3JNJTuR79r5E/view?usp=sharing To reproduce:

1. Open the notebook with Google Colab
2. Run all cells
3. View the runtime logs

Source code / logs.

2022-08-20 17:18:05.533157: W tensorflow/core/common_runtime/forward_type_inference.cc:231] Type inference failed. This indicates an invalid graph that escaped type checking. Error message: INVALID_ARGUMENT: expected compatible input types, but input 1:
type_id: TFT_OPTIONAL
args {
  type_id: TFT_PRODUCT
  args {
    type_id: TFT_TENSOR
    args {
      type_id: TFT_BOOL
    }
  }
}
 is neither a subtype nor a supertype of the combined inputs preceding it:
type_id: TFT_OPTIONAL
args {
  type_id: TFT_PRODUCT
  args {
    type_id: TFT_TENSOR
    args {
      type_id: TFT_LEGACY_VARIANT
    }
  }
}

        while inferring type of node 'dice_loss/cond/output/_11'

[tgsmith61591]

@gadagashwini what’s the point of a warning if the response is simply you can safely ignore it.? It’s clearly there for a reason

[gadagashwini]

Hi @sky712345678, W tensorflow/core/common_runtime/forward_type_inference.cc:231] Type inference failed. is just a warning, you can safely ignore it. Given code executed without any error message. Thank you!