Fixing LangChain FastAPI Docker on Ubuntu 22.04 – why it kept crashing with “module not found” error and how I finally got it working.
Why a simple “module not found” turned my VPS deployment into a debugging nightmare If you’ve ever spent an afternoon staring at a Docker container that dies the moment FastAPI starts, you know the feeling of frustration that comes with vague ModuleNotFoundError messages. I was trying to spin up a LangChain‑based AI tool on an … Read more