Barbie's tech-powered Dreamhouse was a nightmare this Christmas

Mattel's attempt to bring Barbie into the internet age with an app-connected, voice-controlled Barbie Hello Dreamhouse left many users out in the cold on Sunday. 
The toy allows children to control the functions in the tiny house (opening doors, controlling its elevator, turning lights on) using voice commands. 
But on Sunday, Christmas morning, a number of users have reported problems using the toy's voice command, with many saying they got a message reading "Error Code 18" when tryin