Twitter Error 3 upon login

To fix the twitter avatars:

Open “\wp-content\plugins\nextend-twitter-connect\nextend-twitter-connect.php”

Replace
update_user_meta($ID, 'twitter_profile_picture', 'https://api.twitter.com/1.1/users/profile_image?user_id=' . $resp->id . '&size=bigger');

with
update_user_meta($ID, 'twitter_profile_picture', $resp->profile_image_url );

or if you want to cache the images instead of just linking from twitter then do this instead:

Replace
update_user_meta($ID, 'twitter_profile_picture', 'https://api.twitter.com/1.1/users/profile_image?user_id=' . $resp->id . '&size=bigger');

With

//cache profile imgs
		  $uploads = wp_upload_dir();
		  $upbase = $uploads['basedir'].'/';
		  $upurl = $uploads['url'].'/';

                  //u can use any folder structure u'd like by changing this array.
                  //the files will be downloaded in your wp uploads folder

		  $structure_arr = array('user','img','tw');

		  $structure = '';
		  foreach($structure_arr as $folder){
			$structure .=  $folder . '/' ;
			}
		  $img_dir = $upbase.$structure;
		  If(!file_exists($img_dir)) {
			foreach($structure_arr as $folder){
					$dir = $upbase .$folder . '/';
					If(!file_exists($dir)){
						mkdir($dir);
						$upbase = $dir;
					}
			}
		 }
		 $tw_img = str_replace('_normal','',$resp->profile_image_url);
		 $spt_tw_img = explode('.',$tw_img);
		 $tw_ext ='.' . end($spt_tw_img);
		 $file_name = $img_dir.$ID.$tw_ext;
		 $get_tw_img = file_get_contents($tw_img);
		  file_put_contents($file_name,$get_tw_img);
		  update_user_meta($ID, 'twitter_profile_picture',  $upurl . $structure.$ID.$tw_ext);