Refined the unautheticated error on cloud run

Author: codebien

internal/cmd/cloud.go

@@ -31,19 +31,10 @@ import (
 // Grafana Cloud without being logged in or having a valid token.
 //
 //nolint:staticcheck // the error is shown to the user so here punctuation and capital are required
-var errUserUnauthenticated = errors.New("To run tests in Grafana Cloud, you must first authenticate." +
-	" Run the `k6 cloud login` command, or check the docs" +
+var errUserUnauthenticated = errors.New("You must first authenticate to run tests in Grafana Cloud." +
+	" Run the `k6 cloud login` command providing the stack and token, or check the docs" +
 	" https://grafana.com/docs/grafana-cloud/testing/k6/author-run/tokens-and-cli-authentication" +
-	" for additional authentication methods.")
-
-// errStackNotConfigured represents a configuration error when trying to run
-// Grafana Cloud tests without a stack being configured.
-//
-//nolint:staticcheck // the error is shown to the user so here punctuation and capital are required
-var errStackNotConfigured = errors.New(
-	"To run tests in Grafana Cloud, a stack must be configured." +
-		" Run `k6 cloud login --stack <url-or-slug>` to set your default stack," +
-		" or set the K6_CLOUD_STACK_ID environment variable.")
+	" for additional methods.")
 
 // checkCloudLogin verifies that both a token and a stack are configured.
 // Together they represent a complete Grafana Cloud login.
@@ -52,7 +43,7 @@ func checkCloudLogin(conf cloudapi.Config) error {
 		return errUserUnauthenticated
 	}
 	if !conf.StackID.Valid || conf.StackID.Int64 == 0 {
-		return errStackNotConfigured
+		return errUserUnauthenticated
 	}
 	return nil
 }