python – Google Cloud – oauth2client.client.HttpAccessTokenRefreshError：invalid_grant

我在尝试执行Google Prediction API时收到此错误消息.

raise HttpAccesstokenRefreshError(error_msg,status=resp.status)
oauth2client.client.HttpAccesstokenRefreshError: invalid_grant

我的凭证详情

{
    "scopes": [],"private_key": "XXXXX","id_token": null,"token_uri": "https://accounts.google.com/o/oauth2/token","token_info_uri": null,"token_response": null,"client_id": null,"scope": "https://www.googleapis.com/auth/prediction https://www.googleapis.com/auth/devstorage.read_only","token_expiry": null,"_class": "SignedJwtAssertionCredentials","refresh_token": null,"_module": "oauth2client.client","private_key_password": "notasecret","access_token": null,"service_account_name": "[e-mail]","invalid": false,"assertion_type": null,"kwargs": {},"client_secret": null,"revoke_uri": "https://accounts.google.com/o/oauth2/revoke","user_agent": null
}

最佳答案

对于此问题的未来读者,如果此问题在本地发生,则可能是由于系统时钟不同步造成的.否则,在发布此问题的同时,这也是App Engine上的已知问题.两个原因的详细信息可以在去年oauth2client GitHub项目页面的问题报告中找到：

oauth2client.client.HttpAccessTokenRefreshError: invalid_grant: Bad Request