Hello @Jean-HOW
As Randy already stated, the pip warning has no impact on the app actually not launching.
Usually the solution to those problems are buried in the logs of your app being created, there is probably a package that failed to install. I tried forking your repo and got on my side:
ModuleNotFoundError: No module named 'convertdate'
----------------------------------------
ERROR: Failed building wheel for fbprophet
I also get a
pandas.errors.ParserError: Error tokenizing data. C error: Expected 1 fields in line 93, saw 2
error at the end, which I think is Pandas failing to parse the URL you provided.
So my two things to try would be:
- for the
fbprophetinstall, there are some solutions on the forum like here: Can't deploy FbProphet based program in streamlit - #5 by snehankekre - for the Pandas problem, consider using the URL to the raw github file (you can find it by clicking
Rawon the URL of your data in Github) instead:
st.dataframe(
pd.read_csv(
"https://raw.githubusercontent.com/Jean-HOW/stock_prediction/main/stock-app-main/ticker_symbol.csv"
)
)
If you’re still having issues, it may make sense to create a new topic with all the logs you see in the sidebar of your app when it’s building 
Hope this helps you get on track!
Fanilo 