VScode - Can't find Jupyter

[lsd87]

Gone through the OCP Cad viewer install a number of times but always get the same error

gflabel --vscode "Fred" -o basicV.step

Log below, the viewer is running and Jupyter is installed, vscode log shows a connection (pic)
This is on Linux Mint 21.03 machine (Ubuntu 22.04)

Using port 3939 taken from config file
Jupyter kernel not running
Rendering line 1 ("Fred")
Using {'font_style': <FontStyle.REGULAR>, 'font_path': '/home/lsd/.local/lib/python3.10/site-packages/gflabel/resources/OpenSans-Regular'}
Got scale: 1
Entry "Fred" calculated width = 19.0 (max 31.9)
Traceback (most recent call last):
File "/home/lsd/.local/lib/python3.10/site-packages/ocp_vscode/config.py", line 411, in status
return dict(sorted(response.get("text", {}).items()))
AttributeError: 'str' object has no attribute 'get'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/lsd/.local/lib/python3.10/site-packages/ocp_vscode/config.py", line 460, in combined_config
wspace_status = status(port)
File "/home/lsd/.local/lib/python3.10/site-packages/ocp_vscode/config.py", line 414, in status
raise RuntimeError(
RuntimeError: Cannot access viewer status. Is the viewer running?
("'str' object has no attribute 'get'",)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/home/lsd/.local/bin/gflabel", line 8, in
sys.exit(run())
File "/home/lsd/.local/lib/python3.10/site-packages/gflabel/cli.py", line 401, in run
show(
File "/home/lsd/.local/lib/python3.10/site-packages/ocp_vscode/show.py", line 551, in show
t, mapping = _convert(
File "/home/lsd/.local/lib/python3.10/site-packages/ocp_vscode/show.py", line 251, in _convert
instances, shapes, config, count_shapes, mapping = _tessellate(
File "/home/lsd/.local/lib/python3.10/site-packages/ocp_vscode/show.py", line 87, in _tessellate
conf = combined_config(use_status=False)
File "/home/lsd/.local/lib/python3.10/site-packages/ocp_vscode/config.py", line 463, in combined_config
raise RuntimeError(
RuntimeError: Cannot access viewer config. Is the viewer running?
('Cannot access viewer status. Is the viewer running?\n("'str' object has no attribute 'get'",)',)