Autoload error

Module 'Geissweb_Euvat' from '/home/heimkabs/www.heimkinowelt.at/html/releases/20200120080906/app/code/Geissweb/Euvat' has been already defined in '/home/heimkabs/www.heimkinowelt.at/html/releases/20200120080906/vendor/geissweb/module-euvat'.