octobercms/october · error · Error

Unknown label ${label}

Error message

Unknown label ${label}

What it means

Error "Unknown label ${label}" thrown in octobercms/october.

Source

Thrown at modules/backend/vuecomponents/monacoeditor/assets/js/monacoeditor.js:39

                self.MonacoEnvironment = {
                    baseUrl: '${baseUrl}/'
                };
                importScripts('${baseUrl}/vs/base/worker/workerMain.js');
            `],
            { type: 'text/javascript' }
        )
    );

    // window.MonacoEnvironment = { getWorkerUrl: () => proxy };
    window.MonacoEnvironment = {
        getWorker: (moduleId, label) => {
            switch (label) {
                case 'yaml':
                    return new Worker(new URL('monaco-yaml/yaml.worker.min.js', baseUrl));
                case 'editorWorkerService':
                    return new Worker(proxy);
                default:
                    throw new Error(`Unknown label ${label}`);
            }
        }
    };
}

function initEditor(component, options) {
    // Vue 3: Mark model references as raw to prevent Vue from making Monaco objects reactive
    component.modelReferences = Vue.markRaw(component.modelDefinitions.map((def) => {
        return def.makeModelReference(options);
    }));

    if (options.useEmmet && !emmetInitialized) {
        emmetMonaco.emmetHTML(monaco, ["html", "twig", "php"]);
        emmetMonaco.emmetCSS(monaco, ["css", "less", "scss"]);
        emmetInitialized = true;
    }

    if (options.yamlSchemas && !yamlInitialized) {

View on GitHub (pinned to b608633a7e)

When it happens

Trigger: Thrown at modules/backend/vuecomponents/monacoeditor/assets/js/monacoeditor.js:39 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of octobercms/october@b608633a7e (2026-08-21). Data as JSON: /api/errors/07125b05a59cdf24. Report an issue: GitHub.