2015 f4rr injector fault 2 fuse blown

Hi, ‘I’ve got a 2015 F4RR and was at the teack the other day when it broke down. It came up with injector 1,2,3,4 low and 1,2,3,4 high fault on the dash board. Also #2 fuse was blown. I replaced it and it blew again straight away. I then removed the fuel tank and disconnected the 4 lower...