Which OS are you using? Assuming you're using Kali, it'll be in /root/go/src/github.com/haccer/subjack
Just point to it using the -c flag when you're running subjack;

$ subjack -w subdomains.txt -c /root/go/src/github.com/haccer/subjack/fingerprints.json

Working 👍 using -c /root/go/src/...SNIP.../

On *nix, a possibility is to add the directory to the path:

In my case I added this to my zshrc: export GOPATH=$HOME/go

More information here: https://stackoverflow.com/a/21012349

@haccer @bauthard Why not add it as a native go variable? That way everything is contained in a single binary?

In my case, root cause was go get which is not supported and I install using go install, it will append version to a subjack folder. You can find the fingerprint.json using following linux command:

$ find -type f -name "fingerprints.json"
./go/pkg/mod/github.com/haccer/[email protected]/fingerprints.json

Now you can use subjack using -c flag.

find -type f -name "fingerprints.json"
./go/pkg/mod/github.com/haccer/[email protected]/fingerprints.json
worked thanks