type 27undefined 27 is not assignable to type

1let name1:string = person.name as string;

1this.property.Name = data?.Name || '{}';

1let tempPrio = priorities.find(priority => priority.id == taskFormData.value.priority_id)
2selectedPriority.value = tempPrio || Object.assign({})

1let name1:string = person.name!; 
2//                            ^ note the exclamation mark here