How to know if a script started by wp_cron is still active?

There is a plugin called WP-Cron Control to check your scheduled events.

Other way to check it is using WP-CLI via command-line, using this command:

wp cron event list

Hope this helps!

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)