Heroku app successfully deploying, but receiving application error-CodePudding

I am new with pyhton, an I tried to deploy my simple app on Heroku (deployment logs) but I got and error:

Application error An error occurred in the application and your page could not be served. If you are the application owner, check your logs for details. You can do this from the Heroku CLI with the command heroku logs --tail

Deploy log:

-----> Building on the Heroku-20 stack
-----> Using buildpack: heroku/python                                                                                                                             -----> Python app detected
-----> Using Python version specified in runtime.txt
!     Python has released a security update! Please consider upgrading to python-3.8.13
Learn More: https://devcenter.heroku.com/articles/python-runtimes
-----> No change in requirements detected, installing from cache
-----> Using cached install of python-3.8.12
-----> Installing pip 21.3.1, setuptools 57.5.0 and wheel 0.37.0
-----> Installing SQLite3
-----> Installing requirements with pip
-----> Discovering process typesProcfile declares types -> web
-----> Compressing...Done: 230.1M
-----> Launching...Released v10
https://penguins-web-app.herokuapp.com/ deployed to Heroku

The deploying log is ok, but I cant find a possible problem (sorry for the silly question).

LOG Detailed:

2022-03-29T00:11:57.794613 00:00 app[api]: Initial release by user [email protected]
2022-03-29T00:11:57.794613 00:00 app[api]: Release v1 created by user [email protected]
2022-03-29T00:11:57.973779 00:00 app[api]: Enable Logplex by user [email protected]
2022-03-29T00:11:57.973779 00:00 app[api]: Release v2 created by user [email protected]
2022-03-29T00:15:40.000000 00:00 app[api]: Build started by user [email protected]
2022-03-29T00:16:46.591350 00:00 app[api]: Release v3 created by user [email protected]
2022-03-29T00:16:46.591350 00:00 app[api]: Deploy d008069a by user [email protected]
2022-03-29T00:16:46.607351 00:00 app[api]: Scaled to web@1:Free by user [email protected]
2022-03-29T00:17:03.515239 00:00 heroku[web.1]: Starting process with command `sh setup.sh && streamlit run pinguins-app.py`
2022-03-29T00:17:05.173635 00:00 app[web.1]: setup.sh: 2:
2022-03-29T00:17:07.198607 00:00 app[web.1]: Traceback (most recent call last):
2022-03-29T00:17:07.199093 00:00 app[web.1]: File "/app/.heroku/python/bin/streamlit", line 8, in <module>
2022-03-29T00:17:07.199263 00:00 app[web.1]: sys.exit(main())
2022-03-29T00:17:07.199278 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 1130, in __call__
2022-03-29T00:17:07.199694 00:00 app[web.1]: return self.main(*args, **kwargs)
2022-03-29T00:17:07.199708 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 1055, in main
2022-03-29T00:17:07.200079 00:00 app[web.1]: rv = self.invoke(ctx)
2022-03-29T00:17:07.200093 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 1657, in invoke
2022-03-29T00:17:07.200604 00:00 app[web.1]: return _process_result(sub_ctx.command.invoke(sub_ctx))
2022-03-29T00:17:07.200620 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 1404, in invoke
2022-03-29T00:17:07.201079 00:00 app[web.1]: return ctx.invoke(self.callback, **ctx.params)
2022-03-29T00:17:07.201094 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 760, in invoke
2022-03-29T00:17:07.201423 00:00 app[web.1]: return __callback(*args, **kwargs)
2022-03-29T00:17:07.201441 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/streamlit/cli.py", line 172, in main_run
2022-03-29T00:17:07.201594 00:00 app[web.1]: bootstrap.load_config_options(flag_options=kwargs)
2022-03-29T00:17:07.201609 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/streamlit/bootstrap.py", line 318, in load_config_options
2022-03-29T00:17:07.201799 00:00 app[web.1]: config.get_config_options(force_reparse=True, options_from_flags=options_from_flags)
2022-03-29T00:17:07.201814 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/streamlit/config.py", line 1020, in get_config_options
2022-03-29T00:17:07.202187 00:00 app[web.1]: _update_config_with_toml(file_contents, filename)
2022-03-29T00:17:07.202202 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/streamlit/config.py", line 897, in _update_config_with_toml
2022-03-29T00:17:07.202538 00:00 app[web.1]: parsed_config_file = toml.loads(raw_toml)
2022-03-29T00:17:07.202553 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/toml/decoder.py", line 213, in loads
2022-03-29T00:17:07.202700 00:00 app[web.1]: raise TomlDecodeError("Key name found without value."
2022-03-29T00:17:07.202774 00:00 app[web.1]: toml.decoder.TomlDecodeError: Key name found without value. Reached end of line. (line 1 column 2 char 1)
2022-03-29T00:17:07.765837 00:00 heroku[web.1]: Process exited with status 1
2022-03-29T00:17:07.828776 00:00 heroku[web.1]: State changed from starting to crashed
2022-03-29T00:17:07.835310 00:00 heroku[web.1]: State changed from crashed to starting
2022-03-29T00:17:19.895825 00:00 heroku[web.1]: Starting process with command `sh setup.sh && streamlit run pinguins-app.py`
2022-03-29T00:17:20.942050 00:00 app[web.1]: setup.sh: 2:
2022-03-29T00:17:22.226349 00:00 app[web.1]: Traceback (most recent call last):
2022-03-29T00:17:22.226369 00:00 app[web.1]: File "/app/.heroku/python/bin/streamlit", line 8, in <module>
2022-03-29T00:17:22.226447 00:00 app[web.1]: sys.exit(main())
2022-03-29T00:17:22.226459 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 1130, in __call__
2022-03-29T00:17:22.226813 00:00 app[web.1]: return self.main(*args, **kwargs)
2022-03-29T00:17:22.226824 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 1055, in main
2022-03-29T00:17:22.227152 00:00 app[web.1]: rv = self.invoke(ctx)
2022-03-29T00:17:22.227168 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 1657, in invoke
2022-03-29T00:17:22.227604 00:00 app[web.1]: return _process_result(sub_ctx.command.invoke(sub_ctx))
2022-03-29T00:17:22.227617 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 1404, in invoke
2022-03-29T00:17:22.228023 00:00 app[web.1]: return ctx.invoke(self.callback, **ctx.params)
2022-03-29T00:17:22.228025 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/click/core.py", line 760, in invoke
2022-03-29T00:17:22.228267 00:00 app[web.1]: return __callback(*args, **kwargs)
2022-03-29T00:17:22.228282 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/streamlit/cli.py", line 172, in main_run
2022-03-29T00:17:22.228388 00:00 app[web.1]: bootstrap.load_config_options(flag_options=kwargs)
2022-03-29T00:17:22.228391 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/streamlit/bootstrap.py", line 318, in load_config_options
2022-03-29T00:17:22.228539 00:00 app[web.1]: config.get_config_options(force_reparse=True, options_from_flags=options_from_flags)
2022-03-29T00:17:22.228550 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/streamlit/config.py", line 1020, in get_config_options
2022-03-29T00:17:22.228856 00:00 app[web.1]: _update_config_with_toml(file_contents, filename)
2022-03-29T00:17:22.228868 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/streamlit/config.py", line 897, in _update_config_with_toml
2022-03-29T00:17:22.229139 00:00 app[web.1]: parsed_config_file = toml.loads(raw_toml)
2022-03-29T00:17:22.229150 00:00 app[web.1]: File "/app/.heroku/python/lib/python3.8/site-packages/toml/decoder.py", line 213, in loads
2022-03-29T00:17:22.229256 00:00 app[web.1]: raise TomlDecodeError("Key name found without value."
2022-03-29T00:17:22.229283 00:00 app[web.1]: toml.decoder.TomlDecodeError: Key name found without value. Reached end of line. (line 1 column 2 char 1)
2022-03-29T00:17:22.524612 00:00 heroku[web.1]: Process exited with status 1
2022-03-29T00:17:22.576376 00:00 heroku[web.1]: State changed from starting to crashed
2022-03-29T00:17:24.000000 00:00 app[api]: Build succeeded
2022-03-29T00:17:27.995087 00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=web-penguin.herokuapp.com request_id=7aab630c-d2c
d-4b79-90a4-cb2057d7322f fwd="189.6.210.213" dyno= connect= service= status=503
bytes= protocol=https
2022-03-29T00:17:28.921373 00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=web-penguin.herokuapp.com request_id=3
1c1f9ef-b3c0-439d-ae94-885a17afaf14 fwd="189.6.210.213" dyno= connect= service=status=503 bytes= protocol=https

My python code:

import streamlit as st
import pandas as pd
from sklearn import datasets
from sklearn.ensemble import RandomForestClassifier

st.write("""
# Simple Iris Flower Prediction App
This app predicts the **Iris flower** type!
""")

st.sidebar.header('User Input Parameters')

def user_input_features():
    sepal_length = st.sidebar.slider('Sepal length', 4.3, 7.9, 5.4)
    sepal_width = st.sidebar.slider('Sepal width', 2.0, 4.4, 3.4)
    petal_length = st.sidebar.slider('Petal length', 1.0, 6.9, 1.3)
    petal_width = st.sidebar.slider('Petal width', 0.1, 2.5, 0.2)
    data = {'sepal_length': sepal_length,
            'sepal_width': sepal_width,
            'petal_length': petal_length,
            'petal_width': petal_width}
    features = pd.DataFrame(data, index=[0])
    return features

df = user_input_features()

st.subheader('User Input parameters')
st.write(df)

iris = datasets.load_iris()
X = iris.data
Y = iris.target

clf = RandomForestClassifier()
clf.fit(X, Y)

prediction = clf.predict(df)
prediction_proba = clf.predict_proba(df)

st.subheader('Class labels and their corresponding index number')
st.write(iris.target_names)

st.subheader('Prediction')
st.write(iris.target_names[prediction])
#st.write(prediction)

st.subheader('Prediction Probability')
st.write(prediction_proba)

My file system dont have the config.toml, int the flher .streamlit/ there is 2 files .stable_random_id and credentials (the last one I delete it). I tryied to create by my own the config.toml but not worked anyway. I used this in the config.toml:

mkdir -p ~/.streamlit/
echo "\
[server]\n\
port = $PORT\n\
enableCORS = false\n\
headless = true\n\
\n\
" > ~/.streamlit/config.toml

CodePudding user response：

Based just on the sample here it looks like you've bound it to a version of python that has a known security issue, but otherwise I don't see any errors in the sample here. If you update your requirements to 3.8.13, it should get rid of the error, since there's 85 vulnerabilities in 3.8.12.

CodePudding user response：

I can successfully deploy in heroku with your code.

link: https://stdemo.herokuapp.com/

requirements.txt

streamlit==1.8.0
scikit-learn==1.0.2
click==8.0.4

Procfile

web: sh setup.sh && streamlit run app.py

setup.sh

mkdir -p ~/.streamlit/
echo "\
[server]\n\
headless = true\n\
port = $PORT\n\
enableCORS = false\n\
\n\
" > ~/.streamlit/config.toml

app.py
Use your code.