encoding='big5' throw OSError: invalid argument

[wanghaisheng]

# create an image
out = Image.new("RGB", (150, 100), (255, 255, 255))

# get a font
fnt = ImageFont.truetype("image/default/TW-Kai-Plus-98_1_format.TTF", 40,encoding='big5')
# get a drawing context
d = ImageDraw.Draw(out)

# draw multiline text
d.multiline_text((10,10), "叫做防老抗衰有一套 跟著中醫來養生\n 中醫養生呢是千百年來", font=fnt, fill=(0, 0, 0))

out.show()

Traceback (most recent call last):
  File "font.py", line 57, in <module>
    fnt = ImageFont.truetype("image/default/TW-Kai-Plus-98_1_format.TTF", 40,encoding='big5')
  File "D:\Program Files\anaconda3\lib\site-packages\PIL\ImageFont.py", line 855, in truetype
    return freetype(font)
  File "D:\Program Files\anaconda3\lib\site-packages\PIL\ImageFont.py", line 852, in freetype
    return FreeTypeFont(font, size, index, encoding, layout_engine)
  File "font.py", line 26, in __init__
    super().__init__(font, size, index, encoding, layout_engine)
  File "D:\Program Files\anaconda3\lib\site-packages\PIL\ImageFont.py", line 211, in __init__
    self.font = core.getfont(
OSError: invalid argument
(base)

I have tried to convert font using fontforge and online tools, all failed.
if i remove encoding, and draw text get blank square instead of glyph

TW-Kai-Plus-98_1_format.zip

[radarhere]

If I install https://github.com/fonttools/fonttools and try to convert these fonts to TTX to find out more information, this font causes OverflowError: timestamp out of range for platform time_t.

Perhaps it is corrupted?