Error : array_slice() expects parameter 1 to be array

Hi,

Sometimes, I got this error message inside the widget :

Warning: array_slice() expects parameter 1 to be array, null given in /home/slaurent/public_html/wp-content/plugins/twitter-feed-list/ApiTwitter.class.php on line 95

How could it be fixed ?

Thanks.

https://wordpress.org/plugins/twitter-feed-list/