我在项目文件中并没有看到以chaincode所命名的文件，所有节点的交互似乎都是使用IPFS进行模型传输，想要确认下是否该项目功能实现不需要链码，亦或是我没有看到该文件。

(fl) E:\Labs\FL\ChainsFL-implementation\dagMainChain>python clientRun.py --epochs 1 --frac 0.1 --gpu -1 --model cnn --num_channels 1
D:\Users\fzhiy\anaconda3\envs\fl\lib\site-packages\torchvision\datasets\mnist.py:48: UserWarning: train_labels has been renamed targets
warnings.warn("train_labels has been renamed targets")
The para of iid is False

CNNMnist(
(conv1): Conv2d(1, 10, kernel_size=(5, 5), stride=(1, 1))
(conv2): Conv2d(10, 20, kernel_size=(5, 5), stride=(1, 1))
(conv2_drop): Dropout2d(p=0.5, inplace=False)
(fc1): Linear(in_features=320, out_features=50, bias=True)
(fc2): Linear(in_features=50, out_features=10, bias=True)
)

Exception in thread Thread-2:
Traceback (most recent call last):
File "D:\Users\fzhiy\anaconda3\envs\fl\lib\threading.py", line 916, in _bootstrap_inner
self.run()
File "D:\Users\fzhiy\anaconda3\envs\fl\lib\threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "D:\Users\fzhiy\anaconda3\envs\fl\lib\subprocess.py", line 1083, in _readerthread
buffer.append(fh.read())
File "D:\Users\fzhiy\anaconda3\envs\fl\lib\codecs.py", line 321, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xd5 in position 4: invalid continuation byte

Traceback (most recent call last):
File "clientRun.py", line 466, in
main('xx.xx.xx.xx')
File "clientRun.py", line 174, in main
dictUserGetStatus, dictUsersttCodeGet = usefulTools.ipfsGetFile(dict_userf_fileHash, dict_users_file)
File "../commonComponent\usefulTools.py", line 22, in ipfsGetFile
outs, errs = ipfsGet.communicate(timeout=10)
File "D:\Users\fzhiy\anaconda3\envs\fl\lib\subprocess.py", line 863, in communicate
stdout, stderr = self._communicate(input, endtime, timeout)
File "D:\Users\fzhiy\anaconda3\envs\fl\lib\subprocess.py", line 1135, in _communicate
stderr = stderr[0]
IndexError: list index out of range

就是哈希值为QmTZqGKUEvD5F8vQyEEJLJB7rzX17tpnN2Uu4YWBRZEYQx的文件。
看了一下好像这个文件要从ipfs系统里面下载下来，但是好像文件丢失下载不到了。往ipfs里上传下载其他文件都是可以的。
还是说这个文件在别的地方我没找到，或者是要我自己弄一个呀。