nso.connect does not work with rest

[euserb]

nso.connect(via='rest') does not work.

topology.yaml

devices:
  nso-master:
    alias: nso-master
    type: NSO
    os: nso
    tacacs:
      username: admin
    passwords:
      tacacs: admin
    connections:
      defaults:
        class: unicon.Unicon
        via: cli
      cli:
        protocol: ssh
        ip: nso_test
        port: 1024
        ssh_options: -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null
      con:
        command: ncs_cli -C
      restconf:
        protocol: http
        ip: nso_test
        port: 80
        username: admin
        password: admin
      netconf:
        protocol: ssh
        ip: nso_test
        port: 1024
        username: admin
        password: admin
      rest:
        class: rest.connector.Rest
        ip: nso_test
        port: 80
        protocol: http
        credentials:
          rest:
            username: admin
            password: admin

Error:

>>> from pyats.topology.loader import load
>>> testbed = load('topology.yaml')
>>> nso = testbed.devices['nso-master']
>>> nso.connect(alias='rest', via='rest')
Connecting to 'nso-master' with alias 'rest'
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "src/pyats/connections/manager.py", line 482, in pyats.connections.manager.ConnectionManager.connect
  File "src/pyats/async_/synchronize.py", line 117, in pyats.async_.synchronize.Lockable.locked._wrapped
  File "/venv/lib/python3.10/site-packages/rest/connector/libs/nso/implementation.py", line 142, in connect
    raise RequestException("Connection to '{ip}:{port}' has returned the "
requests.exceptions.RequestException: Connection to '10.0.1.4:80' has returned the following code '404', instead of the expected status code '200'

Fix:

sed -i 's\{f}/api\{f}/restconf\g' /venv/lib/python3.10/site-packages/rest/connector/libs/nso/implementation.py
sed -i 's\application/vnd.yang.\application/yang-\g' /venv/lib/python3.10/site-packages/rest/connector/libs/nso/implementation.py

>>> from pyats.topology.loader import load
>>> testbed = load('topology.yaml')
>>> nso = testbed.devices['nso-master']
>>> nso.connect(alias='rest', via='rest')
Connecting to 'nso-master' with alias 'rest'
Connected successfully to 'nso-master'
<Response [200]>
>>>