Error when building seastar

[Leo9660]

I'm trying to build and install STGraph with some local changes. I'm following the README.md, with the command

python3 -m build && pip uninstall stgraph -y && pip install dist/stgraph-1.0.0-py3-none-any.whl

I have run the build scripts for static and dynamic graphs. However, error occurs at the first step

/root/anaconda3/envs/seastar/bin/python3: No module named build

I wonder if there's some files missing, perhaps setup.py? I would like to know how can I build local files, in the stgraph fold. Thank you!