ic2でで、ほとんど同じ条件の画像なのに取り込めないのがあるのはどうしたら良いでしょうか

https://sentimental20th.com/assets/img/bg_chara_01.png <- X02 Broken Image
https://sentimental20th.com/assets/img/bg_chara_02.png <- X02 Broken Image
https://sentimental20th.com/assets/img/bg_chara_03.png
https://sentimental20th.com/assets/img/bg_chara_06.png <- X02 Broken Image
https://sentimental20th.com/assets/img/bg_chara_08.png <- X02 Broken Image
https://sentimental20th.com/assets/img/bg_chara_09.png
https://sentimental20th.com/assets/img/bg_chara_10.png
https://sentimental20th.com/assets/img/bg_chara_11.png
https://sentimental20th.com/assets/img/bg_chara_12.png <- X02 Broken Image