Cant start seafile.service and seahub.service

Hi i just followed this tutorial to install seafile on ubuntu 16

i have configured the services but when i try and start the service it sais

Failed to start seafile.service: Unit seafile.service is not loaded properly: Ivalid argument.

happens for both seafile.service and seahub.service

Try to run it manually from seafile directory using ./ start and ./ start-fastcgi

post errors in Seafile/Logs/Seafile.log and Seahub.log

otherwise i’m afraid most people will skip over this post