Fatal Error since v1.2.1

Hi Yehuda

Since updating to plugin v1.2.1, we’ve started to see a Fatal Error each time the Cron job for a plugin application – CiviCRM – runs on our site.

We have a cron job scheduled for 30 minute intervals that triggers Scheduled tasks in the CiviCRM application, but since updating WP SMTP this error occurs (running WP 5.4.2):

[06-Oct-2020 13:07:44 UTC] PHP Fatal error:  Uncaught Error: Class 'WPSMTP\Admin' not found in /home/OURSITE/public_html/wp-content/plugins/wp-smtp/wp-smtp.php:49
Stack trace:
#0 /home/OURSITE/public_html/wp-content/plugins/wp-smtp/wp-smtp.php(34): WP_SMTP->hooks()
#1 /home/OURSITE/public_html/wp-content/plugins/wp-smtp/wp-smtp.php(118): WP_SMTP->__construct()
#2 /home/OURSITE/public_html/wp-settings.php(371): include_once('/home/OURSITE/...')
#3 /home/OURSITE/public_html/wp-config.php(98): require_once('/home/OURSITE/...')
#4 /home/OURSITE/public_html/wp-load.php(37): require_once('/home/OURSITE/...')
#5 /home/OURSITE/public_html/wp-content/plugins/civicrm/civicrm/CRM/Utils/System/WordPress.php(483): require_once('/home/OURSITE/...')
#6 /home/OURSITE/public_html/wp-content/plugins/civicrm/civicrm/CRM/Utils/System.php(1484): CRM_Utils_System_WordPress->loadBootStrap(Array, false, false, '/home/OURSITE/...')
#7 /home/OURSITE/public_html/wp-content/plugins/civicrm/civicrm/bin/cli.class.php(267): CRM_Utils_System::loadBootStrap(Array, false,  in /home/OURSITE/public_html/wp-content/plugins/wp-smtp/wp-smtp.php on line 49

Looks like something changed in your plugin to cause this. Any ideas?

Thanks
Marcus