placebo kernels return nonetype

[NSQY]

>>> from vstools import vs, core; from vskernels import EwaHann, Spline64
>>> blank = core.std.BlankClip()
>>> [type(kernel().scale(blank, 10, 10)) for kernel in (EwaHann, Spline64)]
[<class 'NoneType'>, <class 'vapoursynth.VideoNode'>]

[Setsugennoao]

Config

[Vodes]

efea2ed
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