Unable to encode due to lack of "Frame Rate info node"

[DUGUJACK]

I tried the Vapoursynth but it doesn't work. Here is the script:

# Imports
import vapoursynth as vs
core = vs.get_core()
# Loading Plugins
core.std.LoadPlugin(path="C:/Program Files/Hybrid/64bit/vsfilters/SourceFilter/LSmashSource/vslsmashsource.dll")
# Loading D:\Peter Pan Bluray_1.mp4 using LibavSMASHSource
clip = core.lsmas.LibavSMASHSource(source="D:/Peter Pan Bluray_1.mp4")
# making sure input color matrix is set as 709
clip = core.resize.Point(clip, matrix_in_s="709",range_s="limited")
# making sure frame rate is set to 24000/1001
clip = core.std.AssumeFPS(clip, fpsnum=24000, fpsden=1001)
# Setting color range to TV (limited) range.
clip = core.std.SetFrameProp(clip=clip, prop="_ColorRange", intval=1)
# Loading image based subtitle D:\Peter Pan.sup using Subtitle
subs = core.sub.ImageFile(clip=clip, file="D:/Peter Pan.sup", blend=False)
alpha = core.std.PropToClip(subs)
subs = core.resize.Bicubic(subs, width=clip.width, height=clip.height, format=clip.format.id, matrix_s="709", range_s="limited")
gray_format = core.register_format(vs.GRAY, clip.format.sample_type, clip.format.bits_per_sample, 0, 0)
alpha = core.resize.Bicubic(alpha, width=clip.width, height=clip.height, format=gray_format.id, range_s="limited")
clip = core.std.MaskedMerge(clip, subs, alpha)
# adjusting output color from: RGB24 to YUV420P8 for x264Model (i420)
clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P8, matrix_s="709", range_s="limited")
# Output
clip.set_output()

I don't know whether the script uses the SupTitle.dll or not.