TypeError: Cannot set properties of undefined (setting 'apex')

[bthiban]

TypeError: Cannot set properties of undefined (setting 'apex')
registerLanguage
node_modules/monaco-editor/esm/vs/basic-languages/_.contribution.js:42
39 | }
40 | export function registerLanguage(def) {
41 | var languageId = def.id;

42 | languageDefinitions[languageId] = def;
43 | languages.register(def);
44 | var lazyLanguageLoader = LazyLanguageLoader.getOrCreate(languageId);
45 | languages.setMonarchTokensProvider(languageId, lazyLanguageLoader.whenLoaded().then(function (mod) { return mod.language; }));
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