Support for Multisite?

I was able to install this on a multisite set up but when I select network activate I get the error message below.

Warning: require(/volume1/web/wordpress/wp-content/plugins/perfecty-push-notifications/vendor/composer/../symfony/deprecation-contracts/function.php): failed to open stream: No such file or directory in /volume1/web/wordpress/wp-content/plugins/perfecty-push-notifications/vendor/composer/autoload_real.php on line 78 Fatal error: require(): Failed opening required '/volume1/web/wordpress/wp-content/plugins/perfecty-push-notifications/vendor/composer/../symfony/deprecation-contracts/function.php' (include_path='.:/usr/share/pear') in /volume1/web/wordpress/wp-content/plugins/perfecty-push-notifications/vendor/composer/autoload_real.php on line 78