chore: clear error message with unauthorized credentials (#5236)

cmd/cp-url.go

@@ -336,7 +336,7 @@ func prepareCopyURLs(ctx context.Context, o prepareCopyURLsOpts) chan URLs {
 		defer close(copyURLsCh)
 		copyURLsContent, err := guessCopyURLType(ctx, o)
 		if err != nil {
-			copyURLsCh <- URLs{Error: errUnableToGuess().Trace(o.sourceURLs...)}
+			copyURLsCh <- URLs{Error: errUnableToGuess(err.Cause.Error()).Trace(o.sourceURLs...)}
 			return
 		}
 

cmd/typed-errors.go

@@ -41,8 +41,11 @@ var errInvalidArgument = func() *probe.Error {
 
 type unableToGuessErr error
 
-var errUnableToGuess = func() *probe.Error {
+var errUnableToGuess = func(customMsg string) *probe.Error {
 	msg := "Unable to guess the type of copy operation."
+	if strings.TrimSpace(customMsg) != "" {
+		msg = customMsg
+	}
 	return probe.NewError(unableToGuessErr(errors.New(msg)))
 }