issues in building main.go file with go build

[sushantdhopat]

i try to build a "main.go" file with go i give the error.
root@kali:/Desktop/subjack# go build main.go
main.go:8:2: cannot find package "github.com/haccer/subjack/subjack" in any of:
/usr/lib/go-1.14/src/github.com/haccer/subjack/subjack (from $GOROOT)
/root/go/src/github.com/haccer/subjack/subjack (from $GOPATH)
root@kali:/Desktop/subjack#

what is this error can any one help.