> For the complete documentation index, see [llms.txt](https://docs.uniplex.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.uniplex.xyz/bot-hosting/startup.md).
# Startup
1. If you run into the `MODULE_NOT_FOUND` or `No such file or directory` error, then you either don't have the files uploaded or the correct file name, set in the "Startup" tab.
Eror on Javascript
Error on Python
2. To fix the error, you want to head to the "Startup" tab and change `The file that starts the app` to your startup file such as index.js, app.js, main.js, script.js or file.js or whatever it is. For python, do the same, main.py, index.py, app.py, script.py, etc. If it's in a folder, simply do `foldername/FILENAME` and you are simply done!