It seems like Google doesn't want a single machine visiting so many links in such a short time. I wonder what the "bad response" could be?

    Google asks for a login, sleeping 20 minutes.
    Server returned bad response. Sleeping 8 seconds.
    635=302 https://images.google.com.pk/imgres?imgurl=http://www.pakiboutique.com/wp-content/gallery/zainab-chottani-pret-collection-2017/zainab-chottani-luxury-pret-2017-7.jpg&imgrefurl=http://www.pakiboutique.com/zainab-chottani-pret-collection-2017&docid=0gx_lzfAk8YInM&tbnid=qKdQuVyBbOHJfM:&w=948&h=1280&source=sh/x/im 

    Google asks for a login, sleeping 20 minutes.
    Server returned bad response. Sleeping 11 seconds.
    636=302 https://images.google.com.pk/imgres?imgurl=http://www.pakiboutique.com/wp-content/gallery/zainab-chottani-pret-collection-2017/zainab-chottani-luxury-pret-2017-7.jpg&imgrefurl=http://www.pakiboutique.com/zainab-chottani-pret-collection-2017&docid=0gx_lzfAk8YInM&tbnid=qKdQuVyBbOHJfM:&w=948&h=1280&source=sh/x/im 

    Google asks for a login, sleeping 20 minutes.
    Server returned bad response. Sleeping 29 seconds.
    637=302 https://images.google.com.pk/imgres?imgurl=http://www.pakiboutique.com/wp-content/gallery/zainab-chottani-pret-collection-2017/zainab-chottani-luxury-pret-2017-7.jpg&imgrefurl=http://www.pakiboutique.com/zainab-chottani-pret-collection-2017&docid=0gx_lzfAk8YInM&tbnid=qKdQuVyBbOHJfM:&w=948&h=1280&source=sh/x/im