ntfs_attr_pread_i: ntfs_pread failed: Invalid argument

grahamperrin@momh167-gjp4-8570p:~ % date ; uname -v
Sun Dec 23 10:35:21 GMT 2018
FreeBSD 13.0-CURRENT r342020 GENERIC
grahamperrin@momh167-gjp4-8570p:~ % gpart show /dev/da0
=>       63  976773105  da0  MBR  (466G)
         63       1985       - free -  (993K)
       2048  976769024    1  ntfs  [active]  (466G)
  976771072       2096       - free -  (1.0M)

grahamperrin@momh167-gjp4-8570p:~ % sudo ntfs-3g /dev/da0s1 /mnt/
ntfs_attr_pread_i: ntfs_pread failed: Invalid argument
Failed to read NTFS $Bitmap: Invalid argument
The device '/dev/da0s1' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
grahamperrin@momh167-gjp4-8570p:~ % pkg query '%o %v %R' fusefs-ntfs
sysutils/fusefs-ntfs 2017.3.23 FreeBSD
grahamperrin@momh167-gjp4-8570p:~ % sudo mount -r -t ntfs /dev/da0s1 /mnt/
mount: /dev/da0s1: Operation not supported by device
grahamperrin@momh167-gjp4-8570p:~ %