I'm getting an error that looks really wierd (notice the red error, running all the way down from top to bottom, over the left sidebar):

The error is:

Failed to load plugin: wordPress from url /wp-includes/js/tinymce/plugins/wordpress/plugin.min.js

But I got an error earlier today, appeared in the same wierd fashion, but the error was then:

Error in backend: Failed to load plugin: tabfocus from url url /wp-includes/js/tinymce/plugins/wordpress/plugin.min.js

The error comes and goes, - and I'm unable to figure out, why it appears. When it appeared earlier today, then I deactivated all plugins; and then the error disappeared. Then I reactivated all my plugins, - and the error was still gone!?

I just tried doing the same thing just now, but this time it didn't solve it.

My original theory is, that it's either because of:

• Yoast
• Advanced Custom Fields
• Or because I'm running on a local environment, using Flywheel

But I don't think so anymore, since the error comes and goes, - and that it persists, even after reactivating the plugins again.

As can be seen on above-shown image, then I've deactivated the editor. I'm doing that with these lines:

/**
 * Disable regular editor
 */
function custom_init_remove_support(){
    remove_post_type_support( 'page', 'editor');
    remove_post_type_support( 'post', 'editor');
}
add_action('init', 'custom_init_remove_support', 100 );

Could that maybe somehow be related to the error?