So the thing is, that patch log says:

"Game patch log
Error modifying(...)"

But when in hame it's shown that i have build 1.04 (bottom left).
The quest with the detective is still bugged so i definetly still have build 1.03...

(pleasy ignore this post, i by mistake created a coppy. Instead head to this one. https: //www.gog.com/forum/cyberpunk_2077/patch_error )

just attempted to patch to 1.04. game says 1.03

have 500GB SSD with 290GB free...

Galaxy or offline? You can't mix them.

GOG ver. game re-download > Instal > run game > quit game > GOG ver. 1.03 to 1.04 patch > Run as administrator

This is how i fixed my issue, just that simple reinstal. I think that if you get imatient with the patcher, and cloase it it will breake the proces for good. So the fix is to let the patcher do it's thing, even if it ends on an error. Do not force cloase the patcher. that's the only idea i have on why it happend.