From xRes version 20.08 we are PHP7.2 ready and can use phpunit 8.5.4 Please adjust your development environments for right PHP version and run a composer install after you have clear the cache. composer.phar clear-cache composer.phar install -- -- Sören Pestner - Entwickler - TraSo GmbH Nonnenstraße 42 D-04229 Leipzig telefon: +49 341 355 740 - 49 email: s.pestner@traso.de Geschäftsführer: Haiko Gerdes Handelsregister: Amtsgericht Leipzig (HRB 21850)