1

Hello,
I’m new here but am trying to run my streamlit app but as it starts up, I get the error:
Exception in callback AppSession._on_scriptrunner_event..() at /usr/local/lib/python3.9/site-packages/streamlit/runtime/app_session.py:518
handle: <Handle AppSession._on_scriptrunner_event..() at /usr/local/lib/python3.9/site-packages/streamlit/runtime/app_session.py:518>
Traceback (most recent call last):
File “/usr/local/lib/python3.9/site-packages/streamlit/web/bootstrap.py”, line 347, in run
if asyncio.get_running_loop().is_running():
RuntimeError: no running event loop

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File “/usr/local/lib/python3.9/asyncio/events.py”, line 80, in _run
self._context.run(self._callback, *self._args)
File “/usr/local/lib/python3.9/site-packages/streamlit/runtime/app_session.py”, line 518, in
lambda: self._handle_scriptrunner_event_on_event_loop(
File “/usr/local/lib/python3.9/site-packages/streamlit/runtime/app_session.py”, line 612, in _handle_scriptrunner_event_on_event_loop
msg = self._create_new_session_message(
File “/usr/local/lib/python3.9/site-packages/streamlit/runtime/app_session.py”, line 742, in _create_new_session_message
_populate_user_info_msg(imsg.user_info)
File “/usr/local/lib/python3.9/site-packages/streamlit/runtime/app_session.py”, line 990, in _populate_user_info_msg
inst = Installation.instance()
File “/usr/local/lib/python3.9/site-packages/streamlit/runtime/metrics_util.py”, line 228, in instance
cls._instance = Installation()
File “/usr/local/lib/python3.9/site-packages/streamlit/runtime/metrics_util.py”, line 236, in _init_
self.installation_id_v4 = _get_machine_id_v4()
File “/usr/local/lib/python3.9/site-packages/streamlit/runtime/metrics_util.py”, line 209, in _get_machine_id_v4
with file_util.streamlit_write(filepath) as output:
File “/usr/local/lib/python3.9/contextlib.py”, line 119, in _enter_
return next(self.gen)
File “/usr/local/lib/python3.9/site-packages/streamlit/file_util.py”, line 109, in streamlit_write
os.makedirs(os.path.dirname(path), exist_ok=True)
File “/usr/local/lib/python3.9/os.py”, line 225, in makedirs
mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: ‘/.streamlit’

**Any recommendations on how to address this?
**
My Docker is extremely simple:
FROM python:3.9-slim

WORKDIR /app

COPY . .

RUN pip3 install -r requirements.txt

CMD [“streamlit”, “run”, “app.py”, “–server.port=7860”, “–server.address=0.0.0.0”, “–server.enableXsrfProtection=false”]

Thanks in advance for any help!

1 Like
2

How about like this?

FROM python:3.9-slim

# Create non-root user that matches Spaces runtime (uid 1000), set HOME
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user PATH=/home/user/.local/bin:$PATH
WORKDIR $HOME/app

# Install deps as the user
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy app code with correct ownership
COPY --chown=user . .

# Optional: project config; Streamlit also reads $CWD/.streamlit/config.toml
# (this avoids reliance on ~/.streamlit)
# COPY --chown=user .streamlit $HOME/app/.streamlit

EXPOSE 8501
ENTRYPOINT ["streamlit","run","app.py","--server.port=8501","--server.address=0.0.0.0"]
1 Like
3

Thanks, John6666! I’m getting a new error when using the app. Essentially, I have a front end that takes a collection of inputs and sends it to another space that have my backend model which should render a prediction and send it back to the frontend space. Is this a permission issue or do I need a specific SSL cert?

requests.exceptions.SSLError: HTTPSConnectionPool(host=‘marioandrade-superkart_backend.hf.space’, port=443): Max retries exceeded with url: /v1/predict (Caused by SSLError(SSLCertVerificationError(1, “[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Hostname mismatch, certificate is not valid for ‘marioandrade-superkart_backend.hf.space’. (_ssl.c:1147)”)))

Traceback:

File "/home/user/app/app.py", line 33, in <module>
    response = requests.post("https://MarioAndrade-SuperKart_backend.hf.space/v1/predict", json=product_data)

File "/home/user/.local/lib/python3.9/site-packages/requests/api.py", line 115, in post return request("post", url, data=data, json=json, **kwargs)

File "/home/user/.local/lib/python3.9/site-packages/requests/api.py", line 59, in request return session.request(method=method, url=url, **kwargs)

File "/home/user/.local/lib/python3.9/site-packages/requests/sessions.py", line 589, in request resp = self.send(prep, **send_kwargs)

File "/home/user/.local/lib/python3.9/site-packages/requests/sessions.py", line 703, in send r = adapter.send(request, **kwargs)

File "/home/user/.local/lib/python3.9/site-packages/requests/adapters.py", line 698, in send raise SSLError(e, request=request)

1 Like
4

https://MarioAndrade-SuperKart_backend.hf.space

https://marioandrade-superkart-backend.hf.space/
I think this format is necessary because underscores cannot be used in subdomains.
Embed your Space in another website

5

Both suggestions really helped! Now I’m trying to resolve an error where the Flask app (post from Streamlit) is returning a 404 even though Flask has app.post(‘/v1/predict’) and Streamlit is using exact URL to post json object. Not sure why it would return a 404…

1 Like
6

It seems that errors often occur depending on whether there is a slash or not (/v1/predict vs /v1/predict/).
Well, if that’s the case, it’s easy…:sweat_smile:

1 Like
7

I was hopeful that would work but unfortunately, it’s the same error. :frowning:

1 Like
8

The spaces were set to private. I made them public and it worked. :rofl:

Thanks for your help, John!

1 Like