Unsupported data type for TPU: string in case of ControlledPQC

[Gopal-Dahale]

Replicating the code for Hybrid quantum-classical optimization in the Hello, many worlds tutorial with TPU (in google cloud) results in the following error.

Unsupported data type for TPU: string, caused by output Pad:0 [Op:__inference_train_function_8911]

The modified code can be found here