I rebuilt the server again and the import the vtk modules as I wish. However I want my app to read a .vtu file and it showed this error.
e[0me[31m2022-08-22 01:41:43.355 ( 2.364s) [ 38E49740] vtkXMLReader.cxx:306 ERR| vtkXMLUnstructuredGridReader (0x2d858a0): Error opening file /deploy/server/venv/lib/python3.9/site-packages/trame_app/app/1-full_model.vtue
This is my app structure.