Dithering atkinson does not appear to be supported

Error at line 61, column 5: ffmpeg error; Raw output of ffmpeg follows: 

ffmpeg version 4.3.7-0+deb11u1 Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/usr --extra-version=0+deb11u1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom 
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa 
--enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame 
--enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx 
--enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, gif, from 'assets/animations/tvtuner/meme/bart-simpson-the-simpsons.gif':
  Duration: 00:00:03.15, start: 0.000000, bitrate: 2651 kb/s
    Stream #0:0: Video: gif, bgra, 256x192, 20 fps, 20 tbr, 100 tbn, 100 tbc
[Parsed_color_0 @ 0x55d300324640] EOF timestamp not reliable
Input #1, lavfi, from 'color=c=0x000000:r=1:d=1:s=8x16':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #1:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 8x16 [SAR 1:1 DAR 1:2], 1 tbr, 1 tbn, 1 tbc
[Parsed_color_0 @ 0x55d300414200] EOF timestamp not reliable
Input #2, lavfi, from 'color=c=0xffffff:r=1:d=1:s=8x16':
  Duration: N/A, start: 0.000000, bitrate: N/A
    Stream #2:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 8x16 [SAR 1:1 DAR 1:2], 1 tbr, 1 tbn, 1 tbc
[paletteuse @ 0x7fb264a15040] [Eval @ 0x7ffd4d903d90] Undefined constant or missing '(' in 'atkinson'
[paletteuse @ 0x7fb264a15040] Unable to parse option value "atkinson"
[paletteuse @ 0x7fb264a15040] [Eval @ 0x7ffd4d903dc0] Undefined constant or missing '(' in 'atkinson'
[paletteuse @ 0x7fb264a15040] Unable to parse option value "atkinson"
[paletteuse @ 0x7fb264a15040] Error setting option dither to value atkinson.
[Parsed_paletteuse_2 @ 0x55d30041ba80] Error applying options to the filter.
[AVFilterGraph @ 0x55d300417a80] Error initializing filter 'paletteuse' with args 'dither=atkinson:new=false'
Error initializing complex filters.
Invalid argument
duplico / gamequeer

Dithering atkinson does not appear to be supported #203
