将 Google Storage 添加到用 Java 编写的 Google Endpoints 应用程序后，Web 实例在部署到 GAE 时似乎无法再启动。但是，在本地运行时一切正常（
mvn appengine:run日志异常：
上下文启动失败
c.g.a.r.j.AppEngineWebAppContext@442bff20{/,file:///workspace/,UNAVAILABLE}{/workspace}
com.google.apphosting.api.ApiProxy$FeatureNotEnabledException: app_identity_service.GetAccessToken
at java.base/java.lang.Thread.getStackTrace(Thread.java:1602)
at com.google.apphosting.runtime.ApiProxyImpl.doSyncCall(ApiProxyImpl.java:362)
at com.google.apphosting.runtime.ApiProxyImpl.lambda$makeSyncCall$0(ApiProxyImpl.java:284)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:283)
at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:81)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:120)
at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:81)
at com.google.appengine.api.appidentity.AppIdentityServiceImpl.getAccessTokenUncached(AppIdentityServiceImpl.java:250)
at com.google.appengine.api.appidentity.AppIdentityServiceImpl.getAccessToken(AppIdentityServiceImpl.java:327)
at endpoints.repackaged.com.google.api.client.googleapis.extensions.appengine.auth.oauth2.AppIdentityCredential.intercept(AppIdentityCredential.java:98)
at endpoints.repackaged.com.google.api.client.googleapis.extensions.appengine.auth.oauth2.AppIdentityCredential$AppEngineCredentialWrapper.intercept(AppIdentityCredential.java:243)
at endpoints.repackaged.com.google.api.client.http.HttpRequest.execute(HttpRequest.java:868)
at endpoints.repackaged.com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:419)
at endpoints.repackaged.com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:352)
at endpoints.repackaged.com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:469)
at endpoints.repackaged.com.google.api.config.ServiceConfigSupplier.fetchLatestServiceVersion(ServiceConfigSupplier.java:179)
at endpoints.repackaged.com.google.api.config.ServiceConfigSupplier.fetch(ServiceConfigSupplier.java:146)
at endpoints.repackaged.com.google.api.config.ServiceConfigSupplier.get(ServiceConfigSupplier.java:131)
at endpoints.repackaged.com.google.api.config.ServiceConfigSupplier.get(ServiceConfigSupplier.java:50)
at endpoints.repackaged.com.google.common.base.Suppliers$ExpiringMemoizingSupplier.get(Suppliers.java:241)
at endpoints.repackaged.com.google.api.config.ServiceConfigFetcher.fetch(ServiceConfigFetcher.java:41)
at com.google.api.control.ServiceManagementConfigFilter$1.load(ServiceManagementConfigFilter.java:33)
at com.google.api.control.ConfigFilter.init(ConfigFilter.java:90)
at org.eclipse.jetty.servlet.FilterHolder.initialize(FilterHolder.java:140)
at org.eclipse.jetty.servlet.ServletHandler.lambda$initialize$0(ServletHandler.java:750)
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734)
at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658)
at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:774)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:379)
at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1449)
at com.google.apphosting.runtime.jetty94.AppEngineWebAppContext.startWebapp(AppEngineWebAppContext.java:274)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1414)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:916)
at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:288)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:524)
at com.google.apphosting.runtime.jetty94.AppEngineWebAppContext.doStart(AppEngineWebAppContext.java:218)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at com.google.apphosting.runtime.jetty94.AppVersionHandlerFactory.doCreateHandler(AppVersionHandlerFactory.java:207)
at com.google.apphosting.runtime.jetty94.AppVersionHandlerFactory.createHandler(AppVersionHandlerFactory.java:125)
at com.google.apphosting.runtime.jetty94.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:82)
at com.google.apphosting.runtime.jetty94.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:176)
at com.google.apphosting.runtime.RequestRunner.dispatchServletRequest(RequestRunner.java:264)
at com.google.apphosting.runtime.RequestRunner.dispatchRequest(RequestRunner.java:229)
at com.google.apphosting.runtime.RequestRunner.run(RequestRunner.java:194)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:273)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: com.google.apphosting.api.ApiProxy$FeatureNotEnabledException: app_identity_service.GetAccessToken
at com.google.apphosting.utils.runtime.ApiProxyUtils.convertApiError(ApiProxyUtils.java:81)
at com.google.apphosting.utils.runtime.ApiProxyUtils.getApiError(ApiProxyUtils.java:198)
at com.google.apphosting.runtime.ApiProxyImpl$AsyncApiFuture.success(ApiProxyImpl.java:684)
at com.google.apphosting.runtime.ApiProxyImpl$AsyncApiFuture.success(ApiProxyImpl.java:581)
at com.google.apphosting.runtime.http.HttpApiHostClient.receivedResponse(HttpApiHostClient.java:296)
at com.google.apphosting.runtime.http.JettyHttpApiHostClient$Listener.onComplete(JettyHttpApiHostClient.java:206)
at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:218)
at org.eclipse.jetty.client.ResponseNotifier.notifyComplete(ResponseNotifier.java:210)
at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:481)
at org.eclipse.jetty.client.HttpReceiver.terminateResponse(HttpReceiver.java:461)
at org.eclipse.jetty.client.HttpReceiver.responseSuccess(HttpReceiver.java:424)
at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.messageComplete(HttpReceiverOverHTTP.java:374)
at org.eclipse.jetty.http.HttpParser.handleContentMessage(HttpParser.java:597)
at org.eclipse.jetty.http.HttpParser.parseContent(HttpParser.java:1722)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:1551)
at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.parse(HttpReceiverOverHTTP.java:208)
at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.process(HttpReceiverOverHTTP.java:148)
at org.eclipse.jetty.client.http.HttpReceiverOverHTTP.receive(HttpReceiverOverHTTP.java:80)
at org.eclipse.jetty.client.http.HttpChannelOverHTTP.receive(HttpChannelOverHTTP.java:131)
at org.eclipse.jetty.client.http.HttpConnectionOverHTTP.onFillable(HttpConnectionOverHTTP.java:172)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
... 1 more
出现以下异常的原因是什么，如何解决？
com.google.apphosting.api.ApiProxy$FeatureNotEnabledException: app_identity_service.GetAccessToken
应用程序是用maven构建的，在
pom.xml <!-- See https://cloud.google.com/java/docs/bom -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>libraries-bom</artifactId>
<version>25.4.0</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>com.google.endpoints</groupId>
<artifactId>endpoints-management-control-appengine-all</artifactId>
<version>1.0.14</version>
</dependency>
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>2.0.5</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<type>jar</type>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<dependency>
<groupId>com.luhuiguo</groupId>
<artifactId>aspose-pdf</artifactId>
<version>23.1</version>
</dependency>
<dependency>
<groupId>com.google.cloud</groupId>
<artifactId>google-cloud-storage</artifactId>
<!-- <version>1.118.1</version> -->
</dependency>
<dependency>
<groupId>com.google.endpoints</groupId>
<artifactId>endpoints-framework</artifactId>
<version>${endpoints.framework.version}</version>
</dependency>
</dependencies>