type E_ERROR line 329 – Uncaught Error: Class ‘PostmanAdminControl

Hi,

I installed the plugin on 20 of my websites with different plugins, themes and installations to test it, only single site (not multi-site) installations.
All of the plugins and themes are updated to the latest versions.
All settings of the postman plugin are done and working very well. Sending of testmails and also trough forms (Formidable Pro) with SMTP configuration are ok and working well !

But since the installation, yesterday, I got a automatic fatal error message from the WordPress installations like this one below :

Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.
In this case, WordPress caught an error with one of your plugins, Post SMTP.

Error Details
=============
An error of type E_ERROR was caused in line 329 of the file /fermedegy.com/wp-content/plugins/post-smtp/Postman/Postman-Mail/PostmanSmtpModuleTransport.php. Error message: Uncaught Error: Class ‘PostmanAdminController’ not found in /fermedegy.com/wp-content/plugins/post-smtp/Postman/Postman-Mail/PostmanSmtpModuleTransport.php:329
Stack trace:
#0 /fermedegy.com/wp-content/plugins/post-smtp/Postman/Postman-Mail/PostmanSmtpModuleTransport.php(294): PostmanSmtpModuleTransport->addSettings()
#1 /fermedegy.com/wp-includes/class-wp-hook.php(286): PostmanSmtpModuleTransport->on_admin_init(”)
#2 /fermedegy.com/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)
#3 /fermedegy.com/wp-includes/plugin.php(465): WP_Hook->do_action(Array)
#4 /fermedegy.com/wp-content/plugins/iwp-client/core.class.php(249): do_action(‘admin_init’)
#5 /fermedegy.com/wp-includes/class-wp-hook.php(286): IWP_MMB_Core->admin_wp_loaded_iwp(”)
#6 /fermedegy.com/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)
#7 /fermedegy.com/wp-includes/plugin.php(465): WP_Hook->do_action(Array)
#8 /fermedegy.com/wp-settings.php(546): do_action(‘wp_loaded’)
#9 /fermedegy.com/wp-config.php(87): require_once(‘/fermedegy.com/…’)
#10 /fermedegy.com/wp-load.php(37): require_once(‘/fermedegy.com/…’)
#11 /fermedegy.com/wp-blog-header.php(13): require_once(‘/fermedegy.com/…’)
#12 /fermedegy.com/index.php(17): require(‘/fermedegy.com/…’)
#13 {main}
thrown

Do you have any idea of finding a solution ?

Best Regards,

Norbert