Problems with swagger environment variable %PATH%

I'm a newbie to swagger and go and am following a tutorial here

https://dev.to/aurelievache/learning-go-by-examples-part-2-create-an-http-rest-api-server-in-go-1cdm

have installed swagger using  -  go get -u github.com/go-swagger/go-swagger/cmd/swagger -

when i run swagger to create the server packages I get the following error -

pkg\swagger\gen.go:3: running "rm": exec: "rm": executable file not found in %PATH%

any help to solve this would be good 🙂