P11D Error 6010 v27


Just trying to submit to HM RC and I get the following

Error Number : 6010
Error Type : schema-validation
Location : CarsAndCarFuel
Error Text : Your submission is not in the correct format - please contact your software supplier and quote Error Code 6010.

I have added 2 new cars for 21/22 and both happen to be electric cars.  I have checked the model and it starts with a letter not a number, no obvious spaces.  I've never had this in previous years.  Is there something different this year that could be causing this error.

I'm on V27