When I was playing the Sims 4 I bulldozed the lot my household were on and in the old house were 2 babies which were crying before I bulldozed it. When I built a new house I found the babies in the family inventory and when I placed them into the world they would not stop crying. In the bar with all the family members on it the babies colours were blue (meaning sad) and I fed them, changed their diapers and played with them and they would not stop crying.
Try moving the whole family out and back in via manage world
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