I have been having a problem when trying to back up my 64GB iPad Air to iTunes. My iCloud storage is full, so I was hoping iTunes would keep my iPad data safe. I have backed it up before when I got my MacBook, but I wanted to update the backup. My iPad is on iOS 10.3.2, and my MacBook is on macOS Sierra 10.12.6. The MacBook has 512GB of SSD storage, and I have used 100GB so far, so the storage is definetly not full. When I tried to back it up to iTunes (the iPad) it said the storage is full on this computer. I did a restart and reset, but that didn't help. I cannot wipe the data on the computer because it hasn't been backed up yet. Do you know how I can fix this error? Thanks!