Error in calling fftn with an empty axes

[vtavana]

Following example returns an error

#  Name        Version   Build              Channel
# ────────────────────────────────────────────────────
#  numpy       1.26.4   py311h689b997_3  intel  
#  numpy-base  1.26.4   py311h913173e_3  intel
#  mkl_fft  1.3.8    py311h977b55c_72  intel

import numpy
b=numpy.array([[5, 7, 6, 5], [4, 6, 4, 8], [9, 3, 7, 5]], dtype=numpy.float32)
numpy.fft.fftn(b, axes=(), s=None, norm="forward")
# TypeError: copyto() argument 1 must be numpy.ndarray, not numpy.complex64

while stock NumPy works correctly

#  Name  Version   Build              Channel
# ──────────────────────────────────────────────
#  numpy  1.26.4   py312heda63a1_0  conda-forge

import numpy
b=numpy.array([[5, 7, 6, 5], [4, 6, 4, 8], [9, 3, 7, 5]], dtype=numpy.float32)
numpy.fft.fftn(b, axes=(), s=None, norm="forward")
# array([[5., 7., 6., 5.],
#       [4., 6., 4., 8.],
#       [9., 3., 7., 5.]], dtype=float32)

dtype of input array plays a role here. if dtype=numpy.int64, both stock NumPy and mkl_fft returns the same result.