Getting OS error on NotoColorEmoji font using Python Pillow

Question

I am trying to use NotoColorEmoji font. But Getting OS error when I run the code. I am not sure why its happening.

Here is my code :

from PIL import ImageFont

FONT_PATH = './NotoColorEmoji.ttf' //NotoColorEmoji font directory
font_size = 65
font = ImageFont.truetype(FONT_PATH, size=font_size)

Here is the error that I found :

font = ImageFont.truetype(FONT_PATH, size=font_size)
   File "/home/peter/conda/lib/python3.7/site-packages/PIL/ImageFont.py", line 844, in truetype
     return freetype(font)
   File "/home/peter/conda/lib/python3.7/site-packages/PIL/ImageFont.py", line 841, in freetype
     return FreeTypeFont(font, size, index, encoding, layout_engine)
   File "/home/peter/conda/lib/python3.7/site-packages/PIL/ImageFont.py", line 194, in __init__
     font, size, index, encoding, layout_engine=layout_engine
 OSError: invalid pixel size

Anyone can help on this issue? Your help will be much appreciated. Thanks