You need edit the path to your dicom directory (server/vtkpython/vtk_protocol.py).
$ git clone https://github.com/dobatruong1111/3dviewer-web-project.git
$ cd 3dviewer-web-project
$ npm run build
$ poetry run python .\server\vtkpython\vtk_server.py --port 1234 --content .\dist\
Open your browser to http://localhost:1234/
Or you can live development
$ npm run serve & poetry run python .\server\vtkpython\vtk_server.py --port 1234
Open your browser to http://localhost:1234/