Yes, it appears that DomesticDispute was causing the issue. It's been removed and everything works fine now.
I believe DomesticDispute comes with the latest update of FivePD, just incase this is a bug with everyone.
I've had this issue, can you post your entire .json file at all?
Basically, it's just a small mistake you've made while adding in a car. It could be anything from forgetting a comma, or adding the wrong car name.