NewContext is undefined

[Love-Kogasa]

Im sorry to disturb you.
But look like I find some bug.
I try to run your example goLang file, but

~/GoLang/lua $ go run example.go
# github.com/rosbit/luago
../../go/pkg/mod/github.com/rosbit/luago@v0.5.2/helper.go:10:9: undefined: LuaContext
../../go/pkg/mod/github.com/rosbit/luago@v0.5.2/helper.go:27:72: undefined: LuaContext
../../go/pkg/mod/github.com/rosbit/luago@v0.5.2/helper.go:65:71: undefined: LuaContext
../../go/pkg/mod/github.com/rosbit/luago@v0.5.2/helper.go:66:16: undefined: NewContext

Thank u