assertion error: NameError: name 'dataset' is not defined

[manvirvirk]

whole traceback is : (cgan) D:\dcgan_vae_pytorch-master>python main.py --dataset DRIVE --dataroot ./data/DRIVE Setting up a new session... Namespace(batchSize=64, beta1=0.5, cuda=False, dataroot='./data/DRIVE', dataset='DRIVE', imageSize=64, lr=0.0002, manualSeed=None, ndf=64, netD='', netG='', ngf=64, ngpu=1, niter=25, nz=100, outf='.', saveInt=25, workers=2) Random Seed: 3658 WARNING: You have a CUDA device, so you should probably run with --cuda Traceback (most recent call last): File "main.py", line 89, in assert dataset NameError: name 'dataset' is not defined please help. thanks