Getting all 0 predictions while predicting on test set

Part 1 (2019)
1 
PATH = 'dataset/train'
data = ImageDataBunch.from_df(PATH, df = df_train, ds_tfms=tfms, size=150, test = 
'test').normalize(imagenet_stats)
data.classes

preds,y = learn.get_preds(ds_type=DatasetType.Test)

getting this in y
tensor([0, 0, 0, …, 0, 0, 0])