Last update throws an error

I just installed the last update but the plugin could not be reactivated because of the following error:

Plugin could not be activated because it triggered a fatal error.

Fatal error: Uncaught Error: Class 'HelpieFaq\Features\Faq\Faq_Groups\Faq_Groups' not found in /srv/htdocs/wp-content/plugins/helpie-faq/includes/cpt.php:21 Stack trace: #0 /srv/htdocs/wp-content/plugins/helpie-faq/includes/plugin.php(156): HelpieFaq\Includes\Cpt->register() #1 /srv/htdocs/wp-content/plugins/helpie-faq/includes/plugin.php(20): Helpie_FAQ->register_cpt_and_taxonomy() #2 /srv/htdocs/wp-content/plugins/helpie-faq/includes/plugin.php(316): Helpie_FAQ->__construct() #3 /srv/htdocs/wp-content/plugins/helpie-faq/helpie-faq.php(64): require('/srv/htdocs/wp-...') #4 /srv/htdocs/wp-content/plugins/helpie-faq/helpie-faq.php(54): Helpie_FAQ_Plugin->helpie_faq_activation() #5 /srv/htdocs/wp-content/plugins/helpie-faq/helpie-faq.php(47): Helpie_FAQ_Plugin->__construct() #6 /srv/htdocs/wp-content/plugins/helpie-faq/helpie-faq.php(99): Helpie_FAQ_Plugin::get_instance() #7 /wordpress/core/5.7.1/wp-admin/includes/plugin.php(2300): include('/srv/htdocs/wp-...') #8 /wordpress/core/5.7.1/wp-admin/plugins.php(191): plugin_sandbox_scrape('helpie-faq/help...') #9 {main} thrown in /srv/htdocs/wp-content/plugins/helpie-faq/includes/cpt.php on line 21