Added an upload endpoint with UploadFile and now the app won't even start:
AskVibeRuntimeError: Form data requires "python-multipart" to be installed.
I did pip install multipart. Still the same.
pip install multipart, restarted the repl twice.
Different package, confusingly similar name. You need python-multipart:
pip uninstall multipart
pip install python-multipart
And add it to requirements.txt (or pyproject), otherwise the deployed version will crash again.
On Replit, add it via the Packages tool (or poetry add python-multipart / uv add, depending on the template) so it ends up in the project file. Installing with plain pip in the shell can disappear when the environment is rebuilt.