You should change range to [0, 255] like this:
imgData_fit = (imgData_fit + 1) * 127.5
imgData_fit = imgData_fit.astype(np.uint8)
then define transform like this:
transform = transforms.Compose([
transforms.ToPILImage(),
transforms.CenterCrop(159),
transforms.ToTensor(),  # [0, 1]
transforms.Normalize((0.5,0.5,0.5),(0.5,0.5,0.5))  # 3 channels -> [-1, 1]
])
finally,
imgData_tensor = transform(imgData_ft) should be right