std model generate whole black views.jpg

[HochCC]

commit e63a98f

bash scripts/text_to_3d_std_separately.sh 'a lovely rabbit' ./outputs/test_std

Thanks for sharing your great work, I meet the problem that, the std model has a probability of nearly 40%, in the image_to_views step, the image decoded by vae contains nan, resulting in views.jpg being a completely black image.