what the mean of '”dir_validation_data": 'validation image root''

[a1oneee]

opt = easydict.EasyDict({
"dir_validation_data": 'validation image root',
"batchSize": 1,
"nEpochs":1,
"cuda":2,
})

[a1oneee]

I get a error :FileNotFoundError: [Errno 2] No such file or directory: 'validation image root'，I don't know whether it needs to be created or not

[neutronnet]

I get a error :NotADirectoryError [WinError 267] Invalid directory name。: '.\validation_data\1.tif'.
We tried several methods to make sure that the file path was correct and that we had access