thanks it’s working now.
sharing my requirements.txt for colab users.
aiofiles==0.4.0
aiohttp==3.5.4
asyncio==3.4.3
fastai==1.0.60
torch==1.4.0
torchvision == 0.5.0
numpy==1.16.3
pillow~=6.0
python-multipart==0.0.5
starlette==0.12.0
uvicorn==0.7.1
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