Account page is messed up, can't retrieve my license keys

When I go to my account page I see this text

Notice: Trying to get property 'key' of non-object in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/src/DownloadItem.php on line 105

Fatal error: Uncaught TypeError: Argument 2 passed to Buse2\Download::get_url() must be of the type string, null given, called in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/src/DownloadItem.php on line 105 and defined in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/src/Download.php:12 Stack trace: #0 /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/src/DownloadItem.php(105): Buse2\Download::get_url('mb-core', NULL) #1 /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/src/DownloadItem.php(81): Buse2\DownloadItem->render_bundle_items() #2 /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/src/DownloadItem.php(57): Buse2\DownloadItem->render_bundle() #3 /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/views/account/downloads.php(46): Buse2\DownloadItem->render() #4 /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/src/Account.php(83): include('/opt/bitnami/ap...') #5 /opt/bitnami/apps/wordpress/htdocs/wp-includes/class-wp-hook.php(307): Buse2\ in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/buse2/src/Download.php on line 12
There has been a critical error on this website.