Doesn’t Work with WP Mail Catcher

I get an immediate crash when activating this plugin alongside with Mail logging – WP Mail Catcher – WordPress plugin | www.remarpro.com
The following error log:
Uncaught TypeError: unserialize(): Argument #1 ($data) must be of type string, array given in /wp-content/plugins/wp-mail-catcher/src/Models/Settings.php:28
All is good as soon as deactivating WP Mail Catcher.