Template UI icon not displayed

[bl-ey]

Describe the bug
No option to create a notebook from template.

The extension appears to be loaded correctly:

[I 2024-10-01 15:41:05.440 ServerApp] Installing jupyter_templates handler on path /user/<user>/templates
[I 2024-10-01 15:41:05.440 ServerApp] Search paths:
        /usr/local/lib/python3.11/site-packages/jupyter_templates/templates
        <my custom path>
        /home/<user>/.local/share/jupyter/notebook_templates
        /usr/local/share/jupyter/notebook_templates
        /usr/share/jupyter/notebook_templates
[I 2024-10-01 15:41:05.440 ServerApp] Template label: Templates
[I 2024-10-01 15:41:05.449 ServerApp] Available templates:
        /jupyter_templates/Sample.ipynb
[I 2024-10-01 15:41:05.450 ServerApp] jupyter_templates | extension was successfully loaded.

Config file:

c.JupyterLabTemplates.allowed_extensions = ["*.ipynb", "*.py"]
c.JupyterLabTemplates.template_dirs = ['<my custom path>']
c.JupyterLabTemplates.include_default = True
c.JupyterLabTemplates.include_core_paths = True
c.JupyterLabTemplates.template_label = "Templates"

But there's no way to create a file from template:

Relevant extension versions:

$ pip freeze | grep jupyter
frz-jupyterlab-variableinspector==0.1.4
jupyter-app-launcher==0.1.7
jupyter-events==0.6.3
jupyter-lsp==2.2.5
jupyter-resource-usage==1.0.2
jupyter-server-mathjax==0.2.6
jupyter-telemetry==0.1.0
jupyter_ai==2.21.0
jupyter_ai_magics==2.24.0
jupyter_client==8.6.3
jupyter_core==5.7.2
jupyter_server==2.10.0
jupyter_server_terminals==0.5.3
jupyter_templates==0.1.1
jupyterhub==4.0.2
jupyterlab==4.1.6
jupyterlab-code-snippets==2.2.1
jupyterlab-execute-time==3.0.1
jupyterlab-link-share==0.3.0
jupyterlab_code_formatter==2.2.1
jupyterlab_git==0.44.0
jupyterlab_pygments==0.3.0
jupyterlab_search_replace==1.1.0
jupyterlab_server==2.24.0
jupyterlab_tour==4.0.1
jupyterlab_widgets==1.1.10
pytest-jupyter==0.10.1

[timkpaine]

Can you look at the JS console and see if any errors there?

[bl-ey]

There are:

10:14:12.318 The resource from “https://<redactedurl>/user/<redacteduser>/lab/extensions/jupyter-templates/static/remoteEntry.da877696c2084604af02.js” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff).
[auto-Z](https://<redactedurl>/user/<redacteduser>/lab/workspaces/auto-Z)
10:14:12.332 Loading failed for the <script> with source “https://<redactedurl>/user/<redacteduser>/lab/extensions/jupyter-templates/static/remoteEntry.da877696c2084604af02.js”. [auto-Z:1:1](https://<redactedurl>/user/<redacteduser>/lab/workspaces/auto-Z)
10:14:12.730
error { target: script, isTrusted: true, srcElement: script
, eventPhase: 0, bubbles: false, cancelable: false, returnValue: true, defaultPrevented: false, composed: false, timeStamp: 514, … }
[main.f2fafbd0b713277c000c.js:1:769](https://<redactedurl>/user/<redacteduser>/static/lab/main.f2fafbd0b713277c000c.js?v=f2fafbd0b713277c000c)
    37559 https://<redactedurl>/user/<redacteduser>/static/lab/main.f2fafbd0b713277c000c.js?v=f2fafbd0b713277c000c:1
    e https://<redactedurl>/user/<redacteduser>/static/lab/main.f2fafbd0b713277c000c.js?v=f2fafbd0b713277c000c:1
    37559 https://<redactedurl>/user/<redacteduser>/static/lab/main.f2fafbd0b713277c000c.js?v=f2fafbd0b713277c000c:1
    t https://<redactedurl>/user/<redacteduser>/static/lab/main.f2fafbd0b713277c000c.js?v=f2fafbd0b713277c000c:1
    <anonymous> https://<redactedurl>/user/<redacteduser>/static/lab/main.f2fafbd0b713277c000c.js?v=f2fafbd0b713277c000c:1
    <anonymous> https://<redactedurl>/user/<redacteduser>/static/lab/main.f2fafbd0b713277c000c.js?v=f2fafbd0b713277c000c:1

[timkpaine]

What do you see when you go to https://<redactedurl>/user/<redacteduser>/lab/extensions/jupyter-templates/static/remoteEntry.da877696c2084604af02.js. Also is this a Jupyterhub instance, the urls look funky?

[bl-ey]

How do we expect these urls to look?

I'm using Z2JH via AWS EKS, so there's some.... specifics to my setup (disregarding that the <redactedurl> was done manually since the url is semi-public).

When I do go to the url, I get a jupyter 404 page

Also this time, I noticed a GET call that fails as well (with no request/response payload)

GET
https:///user//lab/extensions/jupyter-templates/static/remoteEntry.da877696c2084604af02.js

[timkpaine]

Are you doing any kind of nginx hardening or manipulation? Looking at e.g. https://discourse.jupyter.org/t/unable-to-get-jupyterlab-git-extension-working/25237/18

in any case, I don't think this is an issue with this library.

[bl-ey]

Nothing in particular, I'm not thinking this is related..

For one - we have 2 extension icons that do load -
ipydrawio

https://<redactedurl>/user/<redacteduser>/lab/extensions/@deathbeds/ipydrawio-webpack/static/remoteEntry.214d258cf5d3cb1ee1e4.js
[HTTP/1.1 200 OK 362ms]

and jupyter-app-launcher

https://<redactedurl>/user/<redacteduser>/lab/extensions/jupyter_app_launcher/static/remoteEntry.5ecaf32c4e9b6bf0dc23.js
[HTTP/1.1 200 OK 242ms]

But also - we're not running on an EC2, it's a kubernetes cluster. But this is all handled on the AWS side with security groups, VPCs, an elastic IP, etc. I'm not sure exactly off hand which tool would be playing that role that nginx would.