Starting from Atmosphere 1.7.0 ips kip patches are no longer officially supported (
check the release notes here) which are usually used for piracy reasons. Therefore sigpatches won't work unless you:
1) Load Atmosphere's package3 via Hekate's FSS0 - You'll need to reboot to Hekate, go to Launch and select emuNAND CFW or sysNAND CFW (depending on which one you use). If you've downloaded the sigpatches from
here. your bootloader/hekate_ipl.bin will already have everything you need to have configured.
2) Use modified Atmosphere's
fusee.bin payload with ips kip patches support.
3) Use
sys-patch instead of sigpatches.
I'd suggest going with the 3rd option, it's so much easier to use sys-patch nowadays because you don't have to update it every time minor firmware or Atmosphere revision is released.