font 에러 관련 질문 (for window 10, local)

---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
<ipython-input-34-4f14924e2a84> in <module>
----> 1 detected_img = yolo.detect_image(img)
      2 plt.imshow(detected_img)

C:\JupyterNotebook\DLCV\Detection\yolo\keras-yolo3\yolo.py in detect_image(self, image)
    128 
    129         font = ImageFont.truetype(font='font/FiraMono-Medium.otf',
--> 130                     size=np.floor(3e-2 * image.size[1] + 0.5).astype('int32'))
    131         thickness = (image.size[0] + image.size[1]) // 300
    132 

~\anaconda3\envs\tf115\lib\site-packages\PIL\ImageFont.py in truetype(font, size, index, encoding, layout_engine)
    851 
    852     try:
--> 853         return freetype(font)
    854     except OSError:
    855         if not isPath(font):

~\anaconda3\envs\tf115\lib\site-packages\PIL\ImageFont.py in freetype(font)
    848 
    849     def freetype(font):
--> 850         return FreeTypeFont(font, size, index, encoding, layout_engine)
    851 
    852     try:

~\anaconda3\envs\tf115\lib\site-packages\PIL\ImageFont.py in __init__(self, font, size, index, encoding, layout_engine)
    208                     return
    209             self.font = core.getfont(
--> 210                 font, size, index, encoding, layout_engine=layout_engine
    211             )
    212         else:

OSError: cannot open resource