model predict can't json encoding error

[Dylan Finlayson]

Hello everyone,

I exported my model and got the docker image running. However, every time I call the predict endpoint with json data, it is not able to read it.

The structure of my json data is like this:

{"instances:[{"col1":val1, "col2":val2,...},{"col1":val1,"col2":val2,...}...]}

It is converted from a pandas dataframe, and then converted to json using json.dumps or json.dump (I've tried both using it in file and exporting to an external json file)

Every time I get this error:

Traceback (most recent call last):

  File "src/python/grpcio/grpc/_cython/_cygrpc/grpc_string.pyx.pxi", line 48, in grpc._cython.cygrpc._decode

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xd3 in position 51: invalid continuation byte

Any idea what's going on?

Thanks,

Dylan

[Chenyu Zhao]

Hi Dylan,

Are there any non utf-8 characters in your prediction payload?

-Chenyu

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[Helin Wang]

Hi Dylan,

Are you using Vertex AutoML Tabular or AutoML Tables? How to run the exported model is a little different depending on the product.

- Vertex AutoML Tabular: https://cloud.google.com/vertex-ai/docs/export/export-model-tabular

- AutoML Tables: https://cloud.google.com/automl-tables/docs/model-export

I recall seeing a similar problem when the customer trained the model on Vertex AutoML Tabular but using the AutoML Tables documentation. Could you verify that you followed the right doc?

Thanks,
Helin

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[Dylan Finlayson]

Solved. I was using the AutoML Tables docker container, rather than the Vertex AutoML Tabular, as Helin correctly guessed above.

Thanks so much.