non-arrey variable in line 151

Hi support team,

I am getting a failure when activating your plugin.

set in a non-array variable in /home/…/wp-content/plugins/wp-user-avatar/includes/class-wp-user-avatar-subscriber.php on line 121

Please help to solve this problem,

THANKS, Alex

https://ww.wp.xz.cn/plugins/wp-user-avatar/