code: def value_and_grad(*args, **kwargs):
      """Return an error when using automatic differentiation with numpy."""
      raise AutodiffNotImplementedError(_USE_OTHER_BACKEND_MSG)
  
file_path: geomstats/geomstats/_backend/numpy/autodiff.py
imports: from geomstats.exceptions import AutodiffNotImplementedError
label_desc: Use image node_id 1 for calling a global function with example usage: value_and_grad() without return types