I think fattas is one of those deponent verbs, so it's active in meaning ('to be missing') but passive in voice. https://en.wiktionary.org/wiki/fatta#Conjugation
Strangely, it seems another meaning of the verb fatta is 'to grasp, to seize or take hold of,' but I'm sure there's some Swedish logic behind that. :)
Is it normal to pronounce the "d" in "vad" like this? It sounds pretty Danish to me.