您好首先這是我第一次使用谷歌的服務。我正在嘗試使用 Google AutoML Vision Api（自定義模型）開發應用程序。我已經構建了一個自定義模型并生成了 API 密鑰（我希望我做得正確）。經過多次嘗試通過 Ionics 和 Android 進行開發并且未能連接到 API。我現在已經在 Python（在 Google Colab 上）中使用了給定代碼的預測建模，即使這樣我仍然收到一條錯誤消息，指出無法自動確定憑據。我不確定我在哪里出錯了。請幫忙?？焖懒?。#installing & importing libraries !pip3 install google-cloud-automlimport sys  from google.cloud import automl_v1beta1from google.cloud.automl_v1beta1.proto import service_pb2#import key.json file generated by GOOGLE_APPLICATION_CREDENTIALSfrom google.colab import filescredentials = files.upload()#explicit function given by Google accounts [https://cloud.google.com/docs/authentication/production#auth-cloud-implicit-python][1]def explicit():from google.cloud import storage# Explicitly use service account credentials by specifying the private key# file.storage_client = storage.Client.from_service_account_json(credentials)# Make an authenticated API requestbuckets = list(storage_client.list_buckets())print(buckets)#import image for predictionfrom google.colab import filesYOUR_LOCAL_IMAGE_FILE = files.upload()#prediction code from modellingdef get_prediction(content, project_id, model_id):prediction_client = automl_v1beta1.PredictionServiceClient()name = 'projects/{}/locations/uscentral1/models/{}'.format(project_id,         model_id)payload = {'image': {'image_bytes': content }}params = {}request = prediction_client.predict(name, payload, params)return request  # waits till request is returned#print function substitute with values  content = YOUR_LOCAL_IMAGE_FILE project_id = "REDACTED_PROJECT_ID" model_id = "REDACTED_MODEL_ID" print (get_prediction(content, project_id,  model_id))運行最后一行代碼時的錯誤消息：