Why did my freezer ice and frost over?

Last Friday I got home and I saw a small puddle of water, opened the fridge then freezer and there was frost and ice all over the place. I left it open for a little bit and went away except some of the ice. How did the defroster not kick on? It only did that once so fo.It's not even a year old! I would expect... show more Last Friday I got home and I saw a small puddle of water, opened the fridge then freezer and there was frost and ice all over the place. I left it open for a little bit and went away except some of the ice. How did the defroster not kick on? It only did that once so fo.It's not even a year old! I would expect this out of a GE appliance but it's a Frigidaire for Christ's sake!
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