Hi,

The document link you provided is for v5, the forge component is currently in v4 and in v4 you need a plugin called confighelper, which is not included in forge component by default.

Regards.

Hi,

There are two option here

Option #1:

1. Download the confighelper plugin and have the plugin.js file ready
2. Clone the ckeditor module
3. Add the confighelper's plugin.js with deploy to target environment as .\ckeditor\plugins\confighelper
4. In your application refer to the clone version of ckeditor and have below config

5. extraPlugins: 'confighelper',
   placeholder: 'Test Placeholder',

Option #2: Preferred one

1. Create a new js file for example config.js with below code
2. //load external plugin

   (function() {

       CKEDITOR.plugins.addExternal('confighelper','../../CKEditorDemo/ckeditor/plugins/confighelper/', 'plugin.js');

    })();

   CKEDITOR.editorConfig = function( config ) {

   };

3. In your application add your config.js from step 1 and confighelper's plugin.js for example below
4. Change the config in your application to below

5. customConfig: '/CKEditorDemo/ckeditor/config.js',
   extraPlugins: 'confighelper',
   placeholder: 'Test Placeholder',

Regards.