APK always has 1 error [Solved]

I'm googled it a bit and tried troubleshooting, but I'm probably missing something obvious.

When I run apk add libusb

(or any package for that reason), it returns:

1 errors; 313 MiB in 84 packages

when I run it in verbose:

1 errors; 84 packages, 4103 dirs, 24829 files, 313 MiB

Not much more data to go on. I'm running the rpi version on an Rpi2