"TypeError: argument 0 is not a Variable", torch version:0.2.0

[arya-none]

torch version:0.2.0
since I met the error "convert KeyError: 'MkldnnConvolutionBackward' " , I reinstall my torch to version 0.2.0. But I get another error as below:

output_var = model(input_var)
File "/usr/local/python3.7.5/lib/python3.7/site-packages/torch/nn/modules/module.py", line 224, in call
result = self.forward(*input, **kwargs)
File "/usr/local/python3.7.5/lib/python3.7/site-packages/torchvision/models/resnet.py", line 139, in forward
x = self.conv1(x)
File "/usr/local/python3.7.5/lib/python3.7/site-packages/torch/nn/modules/module.py", line 224, in call
result = self.forward(*input, **kwargs)
File "/usr/local/python3.7.5/lib/python3.7/site-packages/torch/nn/modules/conv.py", line 254, in forward
self.padding, self.dilation, self.groups)
File "/usr/local/python3.7.5/lib/python3.7/site-packages/torch/nn/functional.py", line 52, in conv2d
return f(input, weight, bias)
TypeError: argument 0 is not a Variable