Replying to HELP: Images don't show up on Threads

I am normally not the one to ask for computer help, but I can't for the life of me figure this out.

Whenever I open a thread with pictures in them, they give me the icon with the piece of paper with like a circle and two triangles on it, or I normally know it as "the can't view picture icon".

The only way I can view it is if I click on it, then it opens a new window and then a can view it.

It used to just happen with .gifs, but now it happens with every image file type.

Can somebody please help me fix this issue.