In the backend. Here is one message I used to get:
Fatal error: Cannot redeclare div() (previously declared in /home/malakut/public_html/homepage/wp-content/plugins/ic/libs/jalali-core.php:76) in /home/malakut/public_html/blog/cms/wp-content/plugins/wp-jalali/inc/jalali-core.php on line 80
I just rechecked. The plugin now works fine. I get neither an error message on search strings nor on the media library page. Thanks. The new update did the trick.