Cannot deploy my first app

[Claudius17]

Hi,

I have created a repo and py file (in main) on github. I cannot deploy as the main path is non existent. I have tried the URL shortcut and it seems to work but then at some point comes up with a Oh no error. i have been looking in the forum before posting but I am struggling coming up with a fix. Any ideas? thanks

[Franky1]

The main branch exists, but the file is not properly named:
streamlit_app_py instead of streamlit_app.py

[Claudius17]

thank you it worked, of course i looked at many other things except the simplest one