I'm having the issue where it says "The getter 'image' was called on null."

the issue is the exact same like this person https://stackoverflow.com/questions/53679858/the-getter-image-was-called-on-null

It is related to loading images from remote source, all images are fine. It also seems to happen everytime when I have scrolled down and start to scroll up again. Any help or input appreciated, thanks!

Edit:

seems to happen more often when I have called for more images, for instanse first I call for 20, then I call for 20 more and add them to the list with setstate and update itemcount with all the new images.