Dark2

i have 4.7.16 but i get this dat why is ask it

hello friends i get this message, We have released a patch to address some important issues in 4.7.16. To obtain the patch please, go to System > Support and apply the patch from the top left box. Can I implement this patch straight away or do you still have to make adjustments? Thanks

my site turns gray and does not load further, see print screen, can someone tell me how I can fix that Grt