Fatal Error after Update to Version 2.6.21

Hello there,

luckylie i use a testwebsite as well instead of a live-website. I have updated the Plugin recently to Version 2.6.21 and after it the websitde breaks down, i got a fatal error which says:

Ein Fehler vom Typ E_COMPILE_ERROR wurde in der Zeile 186 der Datei /var/www/vhosts/XXX/testing.XXX/wp-content/plugins/invoicing/includes/class-wpinv.php verursacht. Fehlermeldung: require_once(): Failed opening required ‘/var/www/vhosts/XXX/XXX/wp-content/plugins/invoicing/vendor/autoload.php’ (include_path=’.:/opt/plesk/php/7.4/share/pear’)

I was able to rollback by the recovery mode to Version 2.6.19. So website is running again, please check for this and let me know. Thanks!