Hierarchical Tags with laravel api

Hello @kael-shipman. I have a problem with Hierarchical Tags in my laravel api. I can't make it work successfully. I make a screenshot and give all information i have. I don't know where is the problem exactly.
In console, this message appears:

• GET https://unpkg.com/swagger-ui-plugin-hierarchical-tags net::ERR_ABORTED 404
• Uncaught ReferenceError: HierarchicalTagsPlugin is not defined
  at window.onload (documentation:100)

Q&A (please complete the following information)

• OS: Ubuntu 20.04
• Browser: chrome
• Method of installation: npm
• Swagger-UI version: 3.10.0
• Swagger/OpenAPI version: OpenAPI 3.0

Content & configuration

Swagger-UI configuration options:

SwaggerUI({
  dom_id: '#swagger-ui',

    url: "{!! $urlToDocs !!}",
    operationsSorter: {!! isset($operationsSorter) ? '"' . $operationsSorter . '"' : 'null' !!},
    configUrl: {!! isset($configUrl) ? '"' . $configUrl . '"' : 'null' !!},
    validatorUrl: {!! isset($validatorUrl) ? '"' . $validatorUrl . '"' : 'null' !!},
    oauth2RedirectUrl: "{{ route('l5-swagger.'.$documentation.'.oauth2_callback') }}",

    requestInterceptor: function(request) {
      request.headers['X-CSRF-TOKEN'] = '{{ csrf_token() }}';
      return request;
    },

    presets: [
      SwaggerUIBundle.presets.apis,
      SwaggerUIStandalonePreset
    ],

    plugins: [
      SwaggerUIBundle.plugins.DownloadUrl,
      HierarchicalTagsPlugin
    ],

    layout: "StandaloneLayout",

    persistAuthorization: {!! config('l5-swagger.defaults.persist_authorization') ? 'true' : 'false' !!},
})

Start with the SwaggerUI configuration in the issue, especially the HierarchicalTagsPlugin entry and the unpkg asset request, using Swagger UI 3.10.0 in Chrome. Reproduce the console errors and check how the plugin is loaded in the Laravel API documentation page. Done means the plugin loads successfully and hierarchical tags work without the reported errors.