How to mount a Windows folder on AWS Ubuntu 22.04

We have just upgraded our server from Ubuntu 18.04 to 22.04. We can no longer mount our WinFS machine. All machines are hosted on AWS.

~$ sudo mount -a
mount error: cifs filesystem not supported by the system
mount error(19): No such device
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)

~$ mount.cifs -V
mount.cifs version: 6.14

~$ modinfo cifs
modinfo: ERROR: Module cifs not found.

Apparently CIFS is old and shouldn’t be used anymore? How can we mount the Windows folder again? All solutions I’ve seen say to install cifs-utils, but it’s already installed. It’s just not working.

/etc/fstab

LABEL=cloudimg-rootfs   /        ext4   defaults,discard        0 1
//172.31.47.233/data /data cifs credentials=/home/hmr/.smbcredentials,uid=www-data,gid=www-data,file_mode=0755,dir_mode=0755 0 0