raising `gr.Error` gives "Unexpected end of JSON input" in Colab notebooks

[anentropic]

Describe the bug

raising the error is supposed to show a modal with the custom error message

instead the error modal says "Unexpected end of JSON input"

Is there an existing issue for this?

• [X] I have searched the existing issues

Reproduction

import gradio as gr

def welcome(name):
    if name == "WTF":
      raise gr.Error("It doesn't work")
    return f"Welcome to Gradio, {name}!"

with gr.Blocks() as demo:
    gr.Markdown(
    """
    # Hello World!
    Start typing below to see the output.
    """)
    inp = gr.Textbox(placeholder="What is your name?")
    out = gr.Textbox()
    inp.submit(welcome, inp, out)

if __name__ == "__main__":
    demo.launch()

Screenshot

Logs

n/a

System Info

Gradio: 3.27.0
Google Colab ipynb

Severity

annoying

[anentropic]

I get the same thing if I raise ValueError instead of gr.Error

the docs example for gr.Error uses an Interface instead of Blocks... is this not supported in Blocks?

[freddyaboulton]

Hi @anentropic !

gr.Error works with blocks. I can only reproduce your error in colab, not locally. And setting a share link via share=True removes the error.

Makes me think it is a colab-specific bug. We will look into it!

[niyasj]

how should I fix this

[freddyaboulton]

I'm not sure what the underlying cause is yet. Seems to be an issue in colab? I would set share=True since that is a workaround for now.

[tye-singwa]

hi! seems that i found root cause for this issue, google colab proxy does not pass data for responses with 4xx / 5xx codes (more context here https://github.com/googlecolab/colabtools/issues/3308). it just returns 505 html page not json data of error.

here is example .

not sure however how to fix it

[freddyaboulton]

Thank you for looking into this @tye-singwa ! Now that we know the likely root cause, we can ask colab support. I can take care of that.

[freddyaboulton]

Let's sit tight. Colab is working on a fix for this on their end.

[Rushikesh1234]

Is it fixed by Colab?

[abidlabs]

Not yet as far as I know

[mashdud]

Having the same issue

[agkush]

I'm also facing the same issue with google colab

[Viveklagishetty]

iam also facing the same issue with gradio

[Viveklagishetty]

issue cleared we have to signup with new email id which you have not used before in chatgpt then after we have to create api

[chakrateja70]

Issue Resolved : step : To view errors and logs, set debug=True in launch() ~ You find error and try to slove it ~ error's like Incorrect API key. ~Expiration of credit score in OpenAi If still not resolved, after above steps , set share=True in launch()

[agkush]

issue cleared we have to signup with new email id which you have not used before in chatgpt then after we have to create api

will you please elaborate the process I an not able to do it

[samPuriwat]

I'm also facing the same issue with google colab, How to fix it?

[mahajandeepakshi03]

Thanks @chakrateja70 debug = True worked... In my case the issue was in the function.

[chakrateja70]

I'm also facing the same issue with google colab, How to fix it?

Check my comment above maybe it's helpful

[freddyaboulton]

Hi all, sorry the problem is with Google colab. I will follow up with them to see if they have a fix coming soon. I think setting share=True and clicking on the share link should make this go away.

[PooryaASG]

Hi @freddyaboulton I'm also facing the same issue with Google Colab. Your last solution not working for me.

[beatG123]

the problem is still...