Fatal Error on line 952

Hi,

often I have this error in my page (if Irefresh the page sometimes work sometimes not works):

Fatal error: Cannot use object of type WP_Error as array in /var/www/clients/client0/web4/web/wp-content/plugins/youtube-channel-gallery/youtube-channel-gallery.php on line 952

I hope that someone can help me.

https://www.ads-software.com/plugins/youtube-channel-gallery/