Fatal error: Uncaught Error: Cannot use object of type WP_Error as array

I got the following error on the front page of the site after connecting to Instagram. I understand there might be some network problem preventing my server to call Instagram API. But I don’t understand why this error would break the whole stylesheet of the site. It looks really awful. Please fix this.

Fatal error: Uncaught Error: Cannot use object of type WP_Error as array in /www/wwwroot/mysite.com/wp-content/plugins/powerkit/modules/instagram/helpers/helper-powerkit-instagram.php:530 Stack trace: #0 /www/wwwroot/mysite.com/wp-content/themes/squaretype/footer.php(65): powerkit_instagram_get_recent() #1 /www/wwwroot/mysite.com/wp-includes/template.php(770): require_once('...') #2 /www/wwwroot/mysite.com/wp-includes/template.php(716): load_template() #3 /www/wwwroot/mysite.com/wp-includes/general-template.php(92): locate_template() #4 /www/wwwroot/mysite.com/wp-content/themes/squaretype/index.php(104): get_footer() #5 /www/wwwroot/mysite.com/wp-includes/template-loader.php(106): include('...') #6 /www/wwwroot/mysite.com/wp-blog-header.php(19): require_once('...') #7 /www/wwwroot/mysite.com/index.php(17): require('...') #8 {main} thrown in /www/wwwroot/mysite.com/wp-content/plugins/powerkit/modules/instagram/helpers/helper-powerkit-instagram.php on line 530