the imported package disappears after call `gop clean`

[gamesky]

The following program sample.gop triggers an unexpected result

// add a sample
package main

import (
	"github.com/caarlos0/env/v11"
)
func main(){

}

//output
gop clean
gop run sample.gop

Expected result

run it ok

Got

gop_autogen.go:7:2: missing go.sum entry for module providing package github.com/caarlos0/env/v11; to add:

Gop Version

1.4.6

Additional Notes

No response