Golang：托管 VM 应用程序的预览返回错误

Question

我正在尝试使用 gcloud preview app run 命令预览 Go docker (App Engine ManagedVM) 应用程序。但我不断收到此错误：Traceback (most recent call last):  File "/Users/jwesonga/google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 83, in <module>    _run_file(__file__, globals())  File "/Users/jwesonga/google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 79, in _run_file    execfile(_PATHS.script_file(script_name), globals_)  File "/Users/jwesonga/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 985, in <module>    main()  File "/Users/jwesonga/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 978, in main    dev_server.start(options)  File "/Users/jwesonga/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 774, in start    self._dispatcher.start(options.api_host, apis.port, request_data)  File "/Users/jwesonga/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/dispatcher.py", line 182, in start    _module, port = self._create_module(module_configuration, port)  File "/Users/jwesonga/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/dispatcher.py", line 262, in _create_module我已经使用boot2docker status确认docker已启动并正在运行，该状态返回running这之前可以正常工作，但在机器重新启动后，似乎没有任何效果。有任何想法吗？