Cannot find modules in $GOPATH/pkg/mod/cache/download

[dmzkrsk]

2018/12/05 10:59:13 	/Users/***/.go/pkg/mod/***/***/[email protected]/log/log.go:10:2:
cannot find identifier for package "github.com/opentracing/opentracing-go":
cannot find package "github.com/opentracing/opentracing-go" in any of:
  /usr/local/Cellar/go/1.11.2/libexec/src/github.com/opentracing/opentracing-go (from $GOROOT)
  /Users/***/.go/src/github.com/opentracing/opentracing-go (from $GOPATH)

find ~/.go -type d -name opentracing-go

/Users/***/.go/pkg/mod/cache/download/github.com/opentracing/opentracing-go

go version

go version go1.11.2 darwin/amd64