I am facing this error in the admin panel. Due to this error my admin panel menus such as order, customers are not loading. It loading forever. Kindly help me to solve this issue.

Uncaught Error: Script error for: tinymce
at makeError (require.js:166)
at HTMLScriptElement.onScriptError (require.js:1681)
  • are you creating any tabs in the admin custom form – Divya Sekar Oct 3 '19 at 11:55
  • No, it not loading for even default menus like customer, orders like that. It sometimes loads but sometimes not. – Kowsigan Atsayam Oct 3 '19 at 13:48

add a code in your edit.php file

app/code/{vendor}/{Module}/Block/Adminhtml/{your folder}/Edit.php

namespace Vendor\Module\Block\Adminhtml\Your Folder;

use Magento\Backend\Block\Widget\Form\Container;

class Edit extends Container
 protected function _prepareLayout()
        $this->_formScripts[] = "
            function toggleEditor() {
                if (tinyMCE.getInstanceById('post_content') == null) {
                    tinyMCE.execCommand('mceAddControl', false, 'post_content');
                } else {
                    tinyMCE.execCommand('mceRemoveControl', false, 'post_content');

        return parent::_prepareLayout();
  • I am not using the custom module for that. . – Kowsigan Atsayam Oct 4 '19 at 14:23

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