Google Cloud "translate.NewClient: dialing: google: could not find default credentials"

I am trying to use Google Translate API on Windows(my own computer). I have an issue with default credentials.
Error: **translate.NewClient: dialing: google: could not find default credentials.

I have enough balance in google cloud.

I started Translate API. (API Enabled)

I added $env:GOOGLE_APPLICATION_CREDENTIALS="KEY_PATH"

package main
import (
"context"
"fmt"
"log"
"cloud.google.com/go/storage"
"cloud.google.com/go/translate"
"golang.org/x/text/language"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
)
func translateTextWithModel(targetLanguage, text, model string) (string, error) {
// targetLanguage := "ja"
// text := "The Go Gopher is cute"
// model := "nmt"
ctx := context.Background()
lang, err := language.Parse(targetLanguage)
if err != nil {
return "", fmt.Errorf("language.Parse: %v", err)
}
client, err := translate.NewClient(ctx)
if err != nil {
return "", fmt.Errorf("translate.NewClient: %v", err)
}
defer client.Close()
resp, err := client.Translate(ctx, []string{text}, lang, &translate.Options{
Model: model, // Either "nmt" or "base".
})
if err != nil {
return "", fmt.Errorf("Translate: %v", err)
}
if len(resp) == 0 {
return "", nil
}
return resp[0].Text, nil
}
func main() {
Json_path := "C:/Users/Mels/Documents/GoogleTools/cred-9dfos6bb49f.json"
ProjectID := "cred"
fmt.Println("RUNNING...")
explicit(Json_path, ProjectID)
fmt.Println(translateTextWithModel("ja", "Hello World", "nmt"))
}
// explicit reads credentials from the specified path.
func explicit(jsonPath, projectID string) {
ctx := context.Background()
client, err := storage.NewClient(ctx, option.WithCredentialsFile(jsonPath))
if err != nil {
log.Fatal(err)
}
defer client.Close()
fmt.Println("Buckets:")
it := client.Buckets(ctx, projectID)
for {
battrs, err := it.Next()
if err == iterator.Done {
break
}
if err != nil {
log.Fatal(err)
}
fmt.Println(battrs.Name)
}
}

JSON File

{
"type": "service_account",
"project_id": "xxxxxxx",
"private_key_id": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"private_key": "-----BEGIN PRIVATE KEY-----XXXXXXXX-----END PRIVATE KEY-----\n",
"client_email": "xxxxxx@xxxxxx.iam.gserviceaccount.com",
"client_id": "11111111111",
"auth_uri": "https://accounts.google.com/o/oauth2/auth",
"api_key": "xxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"token_uri": "https://oauth2.googleapis.com/token",
"auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs",
"client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/xxxxxxx%xxxxxxx.iam.gserviceaccount.com"
}

If the library can't find the default credentials, then you can try to create a client with the credentials path.

Even if this might not be the best option for you (although I prefer it to the env variable), it'll help you diagnose the issue a little better.

In order to create the client with a path to the credentials file, you need to import google.golang.org/api/option, and create the client with the WithCredentialsFile option. Note in the docs that the client can be created with additional options:

func NewClient(ctx context.Context, opts ...option.ClientOption) (*Client, error)

A somewhat more complete example on how to create a client with options would be the following (apply the required parts to your current code as needed):

package main
import (
"cloud.google.com/go/translate"
"context"
"google.golang.org/api/option"
)
func main() {
ctx := context.Background()
client, err := translate.NewClient(ctx, option.WithCredentialsFile("/path/to/your/file"))
if err != nil {
// TODO: handle error.
}
// Use the client.
// Close the client when finished.
if err := client.Close(); err != nil {
// TODO: handle error.
}
}

(This is just a copy of the example in the docs with the additional option included.)

I solved the issue. I downloaded "google cloud shell SDK" and I used "gcloud auth application-default login" code. SDK provides a JSON file and I replaced it with new JSON file.

I do not recommend cloud.google.com/translate/docs/setup instructions. Direct use Google cloud SDK.