That's because dep-tree doesn't know it needs to resolve names starting from `src/`, as your imports have that piece of information trimmed. You can solve this by setting the PYTHONPATH env variable like this:
export PYTHONPATH=src
export PYTHONPATH=src
I thought this could be solved by changing the directory to src/ and then executing that command, but this didn't work.
This also seems to be an issue with the web app, e.g. the repository for the formatter black is only one white dot https://dep-tree-explorer.vercel.app/api?repo=https://github...
I've seen people using tricks like the `sys.path.extend(["src"])` in the main file for being able to place source code into an `src` folder, but unfortunately, dep-tree is not able to take that into account.