Bluez missing gatt-service commands

I was following the bluez docs to access the gatt-services via bluetoothctl command.

The gatt server was running on a raspberry pi and I was trying to read a service from ubuntu core running on DELL 3001 gateway. However the command select-attribute was not available. Is the documentation correct?

Below are the logs for the reference.

admin@FT****2:~$ sudo bluetoothctl
[NEW] Controller 00:23:A7:E1:3D:96 FT****2 [default]
[NEW] Device B8:27:EB:36:87:25 raspberrypi
[NEW] Device B8:C9:B5:4D:9B:F4 sanju!
Agent registered
[bluetooth]# connect  B8:27:EB:36:87:25
Attempting to connect to B8:27:EB:36:87:25
[CHG] Device B8:27:EB:36:87:25 Connected: yes
Connection successful
[NEW] Primary Service
	Generic Attribute Profile
[NEW] Characteristic
	Service Changed
[NEW] Descriptor
	Client Characteristic Configuration
[NEW] Primary Service
	Vendor specific
[NEW] Characteristic
	Vendor specific
[CHG] Device B8:27:EB:36:87:25 UUIDs: 00000001-810e-4a5b-8d75-3e5b444bc3cf
[CHG] Device B8:27:EB:36:87:25 UUIDs: 00001800-0000-1000-8000-00805f9b34fb
[CHG] Device B8:27:EB:36:87:25 UUIDs: 00001801-0000-1000-8000-00805f9b34fb
[CHG] Device B8:27:EB:36:87:25 ServicesResolved: yes                                                e
Invalid commandselect-attribute /org/bluez/hci0/dev_B8_27_EB_36_87_25/service003d/char003e
$ sudo snap info bluez
name:      bluez
summary:   Bluez for Ubuntu
publisher: Canonical✓
license:   unset
description: |
  no description
  - bluez.bluetoothctl
  - bluez.btattach
  - bluez.btmgmt
  - bluez.btmon
  - bluez.hciattach
  - bluez.hciconfig
  - bluez.hcidump
  - bluez.hcitool
  - bluez.meshctl
  - bluez.obexctl
  - bluez.sdptool
  bluez:      simple, enabled, active
  bluez.obex: simple, enabled, active
snap-id:      JmzJi9kQvHUWddZ32PDJpBRXUpGRxvNS
tracking:     latest/stable
refresh-date: 4 days ago, at 19:13 IST
  latest/stable:    5.48-1     2020-07-13 (229) 4MB -
  latest/candidate: 5.48-1     2020-07-08 (229) 4MB -
  latest/beta:      5.48-1     2020-07-03 (229) 4MB -
  latest/edge:      5.48-2-dev 2020-07-10 (240) 4MB -
  20/stable:        –
  20/candidate:     –
  20/beta:          5.53-1     2020-06-25 (217) 5MB -
  20/edge:          5.53-2-dev 2020-07-14 (247) 5MB -
installed:          5.48-1                (229) 4MB -

Figured it out , I had to do menu gatt to get in to the submenu and use the gatt specific commands.