Get data from comment field

I have a Twitter username field in my comment form, and I want to use this to get the profile picture from the user’s twitter account.

This is the code I have at the moment, but it’s throwing up all sorts of errors? Any ideas what I could do to improve it?

<?php
  $TwX=get_comment_meta( $comment->comment_ID, 'ta_twitter_field', true );

  $tweets = getTweets($TwX, 1, array('trim_user'=>false));

	if(is_array($tweets)){
		foreach($tweets as $tweet){
			if($tweet['text']){
				echo $tweet['user']['profile_image_url'];
			}
		}
	}

?>

https://www.ads-software.com/plugins/oauth-twitter-feed-for-developers/