PSNR-HVS generates nan value on 16 bitdepth

[HolyWu]

vmaf -r ref.yuv -d dist.yuv -w 1920 -h 1080 -p 420 -b 16 --feature psnr --feature psnr_hvs --feature float_ssim --feature float_ms_ssim --feature ciede --feature cambi --no_prediction --output output.xml

<VMAF version="2.3.1">
  <params qualityWidth="1920" qualityHeight="1080" />
  <fyi fps="0.24" />
  <frames>
    <frame frameNum="0" psnr_y="33.906031" psnr_cb="39.296533" psnr_cr="40.833613" psnr_hvs_y="nan" psnr_hvs_cb="nan" psnr_hvs_cr="nan" psnr_hvs="nan" float_ssim="0.995452" float_ms_ssim="0.983190" ciede2000="33.900981" cambi="0.000000" />
    <frame frameNum="1" psnr_y="34.004903" psnr_cb="39.345050" psnr_cr="40.867668" psnr_hvs_y="nan" psnr_hvs_cb="nan" psnr_hvs_cr="nan" psnr_hvs="nan" float_ssim="0.995560" float_ms_ssim="0.983446" ciede2000="33.962938" cambi="0.000000" />
    <frame frameNum="2" psnr_y="33.745932" psnr_cb="39.251657" psnr_cr="40.786448" psnr_hvs_y="nan" psnr_hvs_cb="nan" psnr_hvs_cr="nan" psnr_hvs="nan" float_ssim="0.995412" float_ms_ssim="0.982848" ciede2000="33.821717" cambi="0.000000" />
    <frame frameNum="3" psnr_y="33.805168" psnr_cb="39.307132" psnr_cr="40.800736" psnr_hvs_y="nan" psnr_hvs_cb="nan" psnr_hvs_cr="nan" psnr_hvs="nan" float_ssim="0.995450" float_ms_ssim="0.983109" ciede2000="33.874562" cambi="0.000000" />
    <frame frameNum="4" psnr_y="34.022234" psnr_cb="39.339844" psnr_cr="40.870462" psnr_hvs_y="nan" psnr_hvs_cb="nan" psnr_hvs_cr="nan" psnr_hvs="nan" float_ssim="0.995560" float_ms_ssim="0.983451" ciede2000="33.961937" cambi="0.000000" />
  </frames>
  <pooled_metrics>
    <metric name="psnr_y" min="33.745932" max="34.022234" mean="33.896854" harmonic_mean="33.896517" />
    <metric name="psnr_cb" min="39.251657" max="39.345050" mean="39.308043" harmonic_mean="39.308015" />
    <metric name="psnr_cr" min="40.786448" max="40.870462" mean="40.831786" harmonic_mean="40.831758" />
    <metric name="psnr_hvs_y" min="nan" max="nan" mean="nan" harmonic_mean="nan" />
    <metric name="psnr_hvs_cb" min="nan" max="nan" mean="nan" harmonic_mean="nan" />
    <metric name="psnr_hvs_cr" min="nan" max="nan" mean="nan" harmonic_mean="nan" />
    <metric name="psnr_hvs" min="nan" max="nan" mean="nan" harmonic_mean="nan" />
    <metric name="float_ssim" min="0.995412" max="0.995560" mean="0.995487" harmonic_mean="0.995487" />
    <metric name="float_ms_ssim" min="0.982848" max="0.983451" mean="0.983209" harmonic_mean="0.983209" />
    <metric name="ciede2000" min="33.821717" max="33.962938" mean="33.904427" harmonic_mean="33.904344" />
    <metric name="cambi" min="0.000000" max="0.000000" mean="0.000000" harmonic_mean="0.000000" />
  </pooled_metrics>
  <aggregate_metrics />
</VMAF>