Error report:No implementation of function Function(<ufunc 'ceil'>) found for signature

[P0Zeratul]

I followed the jupyternotebook's guide then the I found this:
TypingError: No implementation of function Function(<ufunc 'ceil'>) found for signature:

ceil(complex128)

There are 2 candidate implementations:

• Of which 2 did not match due to:
  Overload in function 'Numpy_rules_ufunc.generic': File: numba\core\typing\npydecl.py: Line 98.
  With argument(s): '(complex128)':
  Rejected as the implementation raised a specific error:
  TypingError: can't resolve ufunc ceil for types [complex128]
  raised from C:\Users******\anaconda3\envs\Python-3.8\lib\site-packages\numba\core\typing\npydecl.py:107

It happened when I tried to use the function nufft_adjoint.In notebook, the code is:
img_grid = sp.nufft_adjoint(ksp * dcf, coord)

Could you please help me?