"The system cannot find the file specified" on windows

[retsyo]

The following program sample.gop triggers an unexpected result

// add a sample
import (
    "math"
)

const s string = "constant"

println s

const n = 500000000

const d = 3e20 / n
println d

println int64(d)

println math.sin(n)

Expected result

`gop run` can run the code, or `gop build` can compile into an exe

Got

The system cannot find the file specified.

===> errors stack:
mod.GOPMOD("", 0)
        C:/Users/USER/go/pkg/mod/github.com/goplus/mod@v0.9.12/modload/module.go:122 mod.GOPMOD(dir, mode)
modload.Load("", 0)
        C:/Users/USER/go/pkg/mod/github.com/goplus/mod@v0.9.12/gopmod/module.go:186 modload.Load(dir, mode)

Gop Version

latest cloned and build one

Additional Notes

I am on windows 10 64 bits. I have tested both in CMD and MSYS2+MingW64.

Howwever, if I run gop mod init something, both gop run and gop build runs as expected