Can't open image file on mac about yolov5-fastapi-demo

[philippe-heitzmann]

Hello, I am getting the same error when uploading a test image through the localhost:8000 "Upload File" UI while confirmed this works fine when attempting the same through the minimal implementation, would the team be able to please look at this? Please see below for the full error:

OSError: cannot open resource
INFO:     127.0.0.1:49700 - "GET / HTTP/1.1" 200 OK
INFO:     127.0.0.1:49700 - "GET /templates/main.css HTTP/1.1" 304 Not Modified
INFO:     127.0.0.1:49704 - "GET / HTTP/1.1" 200 OK
INFO:     127.0.0.1:49708 - "POST / HTTP/1.1" 500 Internal Server Error
ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/uvicorn/protocols/http/h11_impl.py", line 369, in run_asgi
    result = await app(self.scope, self.receive, self.send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/uvicorn/middleware/proxy_headers.py", line 59, in __call__
    return await self.app(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/fastapi/applications.py", line 199, in __call__
    await super().__call__(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/applications.py", line 112, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/middleware/errors.py", line 181, in __call__
    raise exc from None
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/middleware/errors.py", line 159, in __call__
    await self.app(scope, receive, _send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/exceptions.py", line 82, in __call__
    raise exc from None
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/exceptions.py", line 71, in __call__
    await self.app(scope, receive, sender)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/routing.py", line 580, in __call__
    await route.handle(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/routing.py", line 241, in handle
    await self.app(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/routing.py", line 52, in app
    response = await func(request)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/fastapi/routing.py", line 216, in app
    raw_response = await run_endpoint_function(
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/fastapi/routing.py", line 149, in run_endpoint_function
    return await dependant.call(**values)
  File "/Users//Object_Detection/yolov5-fastapi-demo/server.py", line 160, in detect_via_web_form
    plot_one_box(bbox['normalized_box'], img, label=label,
  File "/Users//Object_Detection/yolov5-fastapi-demo/server.py", line 85, in plot_one_box
    fnt = ImageFont.truetype("/usr/share/fonts/truetype/freefont/FreeMono.ttf", 36, encoding="unic")
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/PIL/ImageFont.py", line 855, in truetype
    return freetype(font)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/PIL/ImageFont.py", line 852, in freetype
    return FreeTypeFont(font, size, index, encoding, layout_engine)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/PIL/ImageFont.py", line 211, in __init__
    self.font = core.getfont(
OSError: cannot open resource
Exception in ASGI application
Traceback (most recent call last):
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/uvicorn/protocols/http/h11_impl.py", line 369, in run_asgi
    result = await app(self.scope, self.receive, self.send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/uvicorn/middleware/proxy_headers.py", line 59, in __call__
    return await self.app(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/fastapi/applications.py", line 199, in __call__
    await super().__call__(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/applications.py", line 112, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/middleware/errors.py", line 181, in __call__
    raise exc from None
  File "/Users/ opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/middleware/errors.py", line 159, in __call__
    await self.app(scope, receive, _send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/exceptions.py", line 82, in __call__
    raise exc from None
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/exceptions.py", line 71, in __call__
    await self.app(scope, receive, sender)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/routing.py", line 580, in __call__
    await route.handle(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/routing.py", line 241, in handle
    await self.app(scope, receive, send)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/starlette/routing.py", line 52, in app
    response = await func(request)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/fastapi/routing.py", line 216, in app
    raw_response = await run_endpoint_function(
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/fastapi/routing.py", line 149, in run_endpoint_function
    return await dependant.call(**values)
  File "/Users/Object_Detection/yolov5-fastapi-demo/server.py", line 160, in detect_via_web_form
    plot_one_box(bbox['normalized_box'], img, label=label,
  File "/Users/Object_Detection/yolov5-fastapi-demo/server.py", line 85, in plot_one_box
    fnt = ImageFont.truetype("/usr/share/fonts/truetype/freefont/FreeMono.ttf", 36, encoding="unic")
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/PIL/ImageFont.py", line 855, in truetype
    return freetype(font)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/PIL/ImageFont.py", line 852, in freetype
    return FreeTypeFont(font, size, index, encoding, layout_engine)
  File "/Users/opt/anaconda3/envs/yolov5_fastapi/lib/python3.8/site-packages/PIL/ImageFont.py", line 211, in __init__
    self.font = core.getfont(
OSError: cannot open resource

Thank you!

[philippe-heitzmann]

UPDATE: I was able to fix this by updating line 85 of server.py to the below. It looks like the above specified font may not be available on Linux OS and switching font to system default is therefore needed.

fnt = ImageFont.load_default()