# Seeing blank page when clicking \`use via API\` link

**URL:** </static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fseeing-blank-page-when-clicking-use-via-api-link%2F39502%3E%5C
**Category:** Spaces\
**Created:** [May 11, 2023, 8:47am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fseeing-blank-page-when-clicking-use-via-api-link%2F39502 "2023-05-11T08:47:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dhits](https://avatars.discourse-cdn.com/v4/letter/d/45deac/32.png) [@dhits](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fdhits)%5C
**Post date:** [May 11, 2023, 8:47am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fseeing-blank-page-when-clicking-use-via-api-link%2F39502%2F1 "2023-05-11T08:47:26Z")

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I created a [weed classifier](https://huggingface.co/spaces/dhits/weed_classifier) and am trying to see its API by clicking `use via API` link but I am getting a blank page. The log has an error:

```shell
  File "/home/user/.local/lib/python3.8/site-packages/gradio/blocks.py", line 499, in get_api_info
    info = component["api_info"]["serialized_input"]
KeyError: 'serialized_input'

```

I found only one [report of this error](https://github.com/gradio-app/gradio/issues/4117) on the web and it talks something about huggingspace infrastructure issue.

 ![Screen Shot 2023-05-11 at 10.46.18](https://us1.discourse-cdn.com/hellohellohello/original/3X/3/b/3b16849215c5a03d11db4a9763591bfa1736cc16.jpeg)  
Any ideas how to solve it?

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**Author:** ![freddyaboulton](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/freddyaboulton/32/32732_2.png) [@freddyaboulton](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Ffreddyaboulton)%5C
**Post date:** [May 11, 2023, 1:09pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fseeing-blank-page-when-clicking-use-via-api-link%2F39502%2F2 "2023-05-11T13:09:32Z")

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Hi @dhits

Can you try upgrading versions to 3.29.0?

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**Author:** ![dhits](https://avatars.discourse-cdn.com/v4/letter/d/45deac/32.png) [@dhits](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fdhits)%5C
**Post date:** [August 4, 2023, 12:00pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fseeing-blank-page-when-clicking-use-via-api-link%2F39502%2F3 "2023-08-04T12:00:37Z")

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Thank you very much @freddyaboulton!  
It took me a while to figure out where do I upgrade the gradio version but eventually I did it!  
Changing sdk\_version in the README.md file to 3.29.0 did not help but changing it to 3.39.0 did!