lib = siliconcompiler.Chip('mylib')
    lib.add('model', 'layout', 'lef', 'dti_tm16ffc_90c_7p5t_stdcells_rev1p1p0.lef')

Traceback (most recent call last):
  File "/home/valerii/work/sc/siliconcompiler/heartbeat/heartbeat.py", line 52, in <module>
    main()
  File "/home/valerii/work/sc/siliconcompiler/heartbeat/heartbeat.py", line 5, in main
    lib.add('model', 'layout', 'lef', 'dti_tm16ffc_90c_7p5t_stdcells_rev1p1p0.lef')
  File "/home/valerii/work/sc/venv/lib/python3.10/site-packages/siliconcompiler/core.py", line 939, in add
    return self._search(cfg, keypathstr, *all_args, field=field, mode='add')
  File "/home/valerii/work/sc/venv/lib/python3.10/site-packages/siliconcompiler/core.py", line 1153, in _search
    return self._search(cfg[param], keypath, *all_args, field=field, mode=mode, clobber=clobber)
  File "/home/valerii/work/sc/venv/lib/python3.10/site-packages/siliconcompiler/core.py", line 1153, in _search
    return self._search(cfg[param], keypath, *all_args, field=field, mode=mode, clobber=clobber)
  File "/home/valerii/work/sc/venv/lib/python3.10/site-packages/siliconcompiler/core.py", line 992, in _search
    list_type =bool(re.match(r'\[', cfg[param]['type']))
KeyError: 'type'