Attempt to read property “full_name” on null

Version 2.1.6 has the following PHP warning clogging up our logs:
Attempt to read property "full_name" on null in <path>/plugins/instagram-widget-by-wpzoom/class-wpzoom-instagram-widget.php:462

That line reads:

<img src="<?php echo esc_url( $avatar ); ?>" alt="<?php echo esc_attr( $user_info->data->full_name ); ?>" width="42" height="42"/>

At the top of the display_items method which contains this line you’re defining user_nfo because you’re not sure $user_info exists? Probably need to add a line there to prevent this issue.