B/W image or any other issue playing via Avisynth Filter: ensure you have Avisynth+ 3.7.2 installed! Note that SVP installs AVS 3.5 by default.
https://www.svp-team.com/wiki/RIFE_AI_interpolation
So. You need to install Avisynth+ 3.7.2
https://github.com/AviSynth/AviSynthPlus/releases