Settings failed to load error in the dev tools console

[jtpio]

Currently seeing this error on the dev tools console on the latest main:

Settings failed to load for (@jupyterlab/metadataform-extension:metadataforms) 

And

Settings failed to load for (@jupyterlab/cell-toolbar-extension:plugin)

[jtpio]

cc @brichet who might know more about this and whether this is related to a change upstream in JupyterLab

[jtpio]

The messages seem to originate from the following:

notebook/packages/tree-extension/src/index.ts

Lines 211 to 227 in 2b4b422

	app.restored.then(async () => {
	const plugins = await connector.list('all');
	plugins.ids.forEach(async (id: string) => {
	const [extension] = id.split(':');
	// load the plugin if it is built-in the notebook application explicitly
	// either included as an extension or as a plugin directly
	const hasPlugin = pluginsSet.has(extension) || pluginsSet.has(id);
	if (!hasPlugin || isDisabled(id) || id in settingRegistry.plugins) {
	return;
	}
	try {
	await settingRegistry.load(id);
	} catch (error) {
	console.warn(`Settings failed to load for (${id})`, error);
	}
	});
	});

[brichet]

I can't find any related changes in Jupyterlab.
Do you know if this warning was not present in previous versions ?

The settingRegistry.load function seems to fail when the plugin is not activated.
For me it is expected, the Notebook plugins are not loaded in the tree view (so not the metadataform and cell toolbar either).
But these plugins should probably not be in the pluginSet variable.

[jtpio]

For me it is expected, the Notebook plugins are not loaded in the tree view (so not the metadataform and cell toolbar either).

This logic was added so the plugins not activated on the tree page would still show up in the settings editor (which is only available on the tree page): #6750

[brichet]

I don't think it can work for plugins with a transformation function, since these functions are registered on plugin activation.
Both warnings concern plugins with a transformation function.
The only recent related PR I can see is jupyterlab/jupyterlab#14990, but AFAIK it couldn't work before.

It seems that the message was already present with previous releases of Notebook:

[jtpio]

Thanks @brichet for the details 👍

The only recent related PR I can see is jupyterlab/jupyterlab#14990, but AFAIK it couldn't work before.

Yeah I saw a couple of PRs on JupyterLab that could have been related, but they are not backported to 4.0.x so not used in Notebook 7 (for now).

[jtpio]

Maybe we should open the settings editor in one of the side panels instead of the file browser page (like the extension manager).

That way it would pick up the plugins loaded on the current page, and would not require having to load them explicitly.

[brichet]

This should work for loading settings, but the panel is quite large with the current display. It can be difficult to navigate if it's in a side panel.

[capey0]

In the latest version of Chrome devtools console:

I get 100s of the following:
"Skipping this shortcut because there are no actionable keys on this platform" issued from 5649.bundle.js

Then I get the same messages as OP (except they are from 3768.bundle.js)

I am using:
Windows 11
Python 3.12.x
Used "pip3 install ..." to get Jupyter
Jupyter Dark theme
NO Anaconda

The result is the "increase/decrease font sizes" in the menus do not work. The color schemes for highlighting different data types and keywords also does not work.

Forgot to mention "auto-formatting" (eg. inserting a tab when needed), also does not work!
:(