[BUG] Serving UI doesn't return flow result

[RenatoSGR]

Describe the bug
When running a docker container with the current version of promptflow, the flow is running well, but the frontend app created by the promptflow not showing any answer. The docker container logs are showing the correct flow and answer, but not the frontend.

I needed to use this commit version of promptflow for indez.js and index.html to see everything working properly:

How To Reproduce the bug
Steps to reproduce the behavior, how frequent can you experience the bug:

1. index.js -> https://raw.githubusercontent.com/microsoft/promptflow/ffa78b411ccedd42e95bb412d2d2e83afa6addc0/src/promptflow/promptflow/_sdk/_serving/static/index.js
2. index.html -> https://raw.githubusercontent.com/microsoft/promptflow/ffa78b411ccedd42e95bb412d2d2e83afa6addc0/src/promptflow/promptflow/_sdk/_serving/static/index.html

Expected behavior
Frontend app working properly and showing the question and answer of the promptflow

Screenshots

Additional context
As I said, if I run the old version of index.js and index.html, it works smoothly without this issue.

[brynn-code]

Hi @RenatoSGR, thanks for reaching us, could you please provide the promptflow version you are using? We tried with latest promptflow package seems it works well.

[RenatoSGR]

Hi @brynn-code this is my versions:

pf --version
{
"promptflow": "1.10.1",
"promptflow-core": "1.10.1",
"promptflow-devkit": "1.10.1",
"promptflow-tracing": "1.10.1"
}

Some colleagues also facing the same issue when inside of a container. It anwser on the logs, but not on the frontend like yours.

That behavior that you're showing, I can replicate but running locally without a container.

The Dockerfile generated by promptflow extension:

FROM docker.io/continuumio/miniconda3:latest

WORKDIR /

COPY ./flow/requirements.txt /flow/requirements.txt

RUN apt-get update && apt-get install -y runit gcc

RUN conda create -n promptflow-serve python=3.9.16 pip=23.0.1 -q -y &&
conda run -n promptflow-serve
pip install -r /flow/requirements.txt &&
conda run -n promptflow-serve pip install keyrings.alt &&
conda run -n promptflow-serve pip install gunicorn==20.1.0 &&
conda run -n promptflow-serve pip install 'uvicorn>=0.27.0,<1.0.0' &&
conda run -n promptflow-serve pip cache purge &&
conda clean -a -y

COPY ./flow /flow

EXPOSE 8080

COPY ./connections/* /connections/

RUN rm -rf /var/runit
COPY ./runit /var/runit

RUN chmod -R +x /var/runit
COPY ./start.sh /
CMD ["bash", "./start.sh"]

---

[brynn-code]

Got it, so the point is container, we will try to repro it.

[brynn-code]

Update: we have reproduced the bug, investigating.,

[RenatoSGR]

Thanks, keep in mind my first comment where I provide the working index.js and index.html (from a previous commit, with less features like + new chat on the left pane)

[brynn-code]

@RenatoSGR Hi, we are fixing this issue, but we find a workaround for this issue, maybe you could have a try to see if this can unblock you:

1. Click the + New chat before send the input message
2. Send the message.

[RenatoSGR]

Hi @brynn-code it works like you said.

For now this will unblock me for sure.

Thanks

[brynn-code]

Hi, the fix of this bug has been merged, it will be included in the promptflow 1.12.0.