I fixed it by updating the following code items:
utils.php – about line 21
Replace:
wp_enqueue_style( 'kamn-css-easy-twitter-feed-widget', esc_url( KAMN_EASY_TWITTER_FEED_WIDGET_URI . 'easy-twitter-feed-widget.css' ) );
With:
wp_enqueue_style( 'kamn-css-easy-twitter-feed-widget', plugins_url(KAMN_EASY_TWITTER_FEED_WIDGET_DIR_BASENAME . 'easy-twitter-feed-widget.css') );
Modules.php about line 23
Replace:
//'src' => KAMN_EASY_TWITTER_FEED_WIDGET_JS_URI . 'widget-easy-twitter-feed-widget.js',
With:
'src' => plugins_url(KAMN_EASY_TWITTER_FEED_WIDGET_DIR_BASENAME . 'lib/js/widget-easy-twitter-feed-widget.js'),
Working well at this time.
