Iterative output example does not work

[zhxgj]

Describe the bug

Cannot run the iterative output example. Getting an error "Expecting value: line 1 column 1 (char 0)"

Is there an existing issue for this?

• I have searched the existing issues

Reproduction

Python env

python3.8 -m venv venv && . venv/bin/activate
pip install gradio==3.19.1

Script

import gradio as gr
import time
import numpy as np

# define core fn, which returns a generator {steps} times before returning the image
def fake_diffusion(steps):
    for _ in range(steps):
        time.sleep(1)
        image = np.random.random((600, 600, 3))
        yield image
    image = "https://gradio-builds.s3.amazonaws.com/diffusion_image/cute_dog.jpg"
    yield image


demo = gr.Interface(fake_diffusion, inputs=gr.Slider(1, 10, 3), outputs="image")

# define queue - required for generators
demo.queue()

demo.launch(share=True)

Screenshot

Logs

No stack track of the error is printed, even if enabling debug=True

System Info

python 3.8.6
gradio==3.19.1

Severity

blocking all usage of gradio

[abidlabs]

Hi @zhxgj I can't reproduce the issue. See here: https://colab.research.google.com/drive/1yZvSZQTjbgFC6BKVHCB2BhXvm-xxCnit?usp=sharing -- working fine for me in Colab

[zhxgj]

Sorry my fault. The demo failed due to my network and proxy configuration. It is not a bug.

[tianyil1]

I also met this issue. How to solve if running in a server with the proxy.

[smamindl]

Hi @zhxgj I can't reproduce the issue. See here: https://colab.research.google.com/drive/1yZvSZQTjbgFC6BKVHCB2BhXvm-xxCnit?usp=sharing -- working fine for me in Colab

@abidlabs It does not function on the cloud.