eeb1 on "[Plugin: Mini twitter feed] ERROR: Notice: Undefined index: width and height"

I updated this plugin and got this error in the widget when I activated it and displayed on my sidebar:

Notice: Undefined index: width in /wp-content/plugins/mini-twitter-feed/mini-twitter-feed.php on line 104 Notice: Undefined index: height in /wp-content/plugins/mini-twitter-feed/mini-twitter-feed.php on line 104

Please advise

Thank you

http://wordpress.org/extend/plugins/mini-twitter-feed/