notification update 3.2.0 breaks my site

Hi there,

I just updated to version 3.2.0, which ended up in a fatal error. I downgraded to 3.1.1 as a workarround. The error message displayed is:

Warning: require_once(/var/www/virtual/domain.tld/htdocs/wp-content/plugins/notification//vendor/autoload.php): failed to open stream: No such file or directory in /var/www/virtual/domain.tld/htdocs/wp-content/plugins/notification/notification.php on line 25

Fatal error: require_once(): Failed opening required ‘/var/www/virtual/domain.tld/htdocs/wp-content/plugins/notification//vendor/autoload.php’ (include_path=’.:/opt/phpswitcher/php7.1/share/pear’) in /var/www/virtual/domain.tld/htdocs/wp-content/plugins/notification/notification.php on line 25

regards,
thoand