more detailed error message if template evaluation fails
more detailed error message if template evaluation fails

esteve/rosidl,esteve/rosidl,ros2/rosidl_typesupport,ros2/rosidl_typesupport,ros2/rosidl,ros2/rosidl_typesupport,esteve/rosidl_typesupport,ros2/rosidl,ros2/rosidl,ros2/rosidl,esteve/rosidl,esteve/rosidl_typesupport,esteve/rosidl_typesupport