Plesk Panel Error:- Unable to obtain secret key for passwords encryption.

Following error noticed while opening Plesk Panel:-

ERROR: PleskFatalException
Unable to obtain secret key for passwords encryption.

0: String.php:330
        Plesk_Base_Utils_String::getCryptKey()
1: common_func.php3:3453
        get_failure_redirect_url(string 'failure_redirect_url')
2: auth.php3:191

Solution:-

Running the below command in server will fix it:-

/usr/local/psa/admin/sbin/encrypt_keygen