Description of the problem, including code/CLI snippet

gitlab -c ./gitlab-cli.cfg project-merge-request get --iid 98765 --project-id 12345

with config file content being

[global]
default = foo
ssl_verify = False
timeout = 5
api_version = 4

[foo]
url=https://some-project.url
private_token=some-token-here

results in

Attempted to initialize RESTObject with a non-dictionary value: <Response [200]>
This likely indicates an incorrect or malformed server response.

Expected Behavior

Since I can successfully interact with the same server programmatically from Python (i.e. I am getting a valid server JSON response) I suspect this is a problem of the CLI.
The server response is 200 this typically indicates OK. So it will have sent some payload back.
I expect identical behaviour of package and CLI.

Actual Behavior

Specifications

• python-gitlab version: 3.15.0
• API version you are using (v3/v4): v4
• Gitlab server version (or gitlab.com): 14.9.5