Sand filter collasped

So my new sand filter for my pump collasped overnight. I’m not sure if I hooked it up wrong or what. I am just super upset I don’t know what to do. Can you fix it by rebuilding the pressure inside the container to pop the sides back out? Can you pop sides back out with some kind of force? I don’t want to purchase another one. Or… Do all the pump filters come with warranty to replace?

picture?  I dont see how a sand filter can colapse…