java-docs-samples: Error Deploying Endpoints Sample

In which file did you encounter the issue?

When following the instructions in appengine/endpoints-frameworks-v2/backend/README.md

Did you change the file? If so, how?

I only changed pom.xml, as instructed in the readme.

Describe the issue

Executing mvn appengine:deploy fails. First it hangs for a while after it says “Uploading X files to Google Cloud Storage” (as I indicated in the output below). Then after about 5 minutes it continues. Below is the full output, with my note near the bottom.

Note that this is about the third time I’ve tried; the first time it showed that it was uploading more than 0 files. I cannot find any errors in the cloud console logs.

$ mvn appengine:deploy
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building echo 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> appengine-maven-plugin:1.3.1:deploy (default-cli) > package @ echo >>>
[INFO]
[INFO] --- jacoco-maven-plugin:0.7.7.201606060606:prepare-agent (default) @ echo ---
[INFO] argLine set to "-javaagent:C:\\Users\\Eric\\.m2\\repository\\org\\jacoco\\org.jacoco.agent\\0.7.7.201606060606\\org.jacoco.agent-0.7.7.201606060606-runtime.jar=destfile=S:\\Programming\\git repositories\\tmp\\java-docs-samples\\appengine\\endpoints-frameworks-v2\\backend\\target\\jacoco.exec"
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ echo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.3:compile (default-compile) @ echo ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ echo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.3:testCompile (default-testCompile) @ echo ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.19.1:test (default-test) @ echo ---
[INFO] No tests to run.
[INFO]
[INFO] --- jacoco-maven-plugin:0.7.7.201606060606:report (report) @ echo ---
[INFO] Skipping JaCoCo execution due to missing execution data file.
[INFO]
[INFO] --- maven-war-plugin:2.6:war (default-war) @ echo ---
[INFO] Packaging webapp
[INFO] Assembling webapp [echo] in [S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\target\echo-1.0-SNAPSHOT]
[INFO] Processing war project
[INFO] Copying webapp webResources [S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend/src/main/webapp/WEB-INF] to [S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\target\echo-1.0-SNAPSHOT]
[INFO] Copying webapp resources [S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\src\main\webapp]
[INFO] Webapp assembled in [180 msecs]
[INFO] Building war: S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\target\echo-1.0-SNAPSHOT.war
[INFO]
[INFO] <<< appengine-maven-plugin:1.3.1:deploy (default-cli) < package @ echo <<<
[INFO]
[INFO] --- appengine-maven-plugin:1.3.1:deploy (default-cli) @ echo ---
[INFO] Staging the application to: S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\target\appengine-staging
[INFO] Detected App Engine standard environment application.
Jun 07, 2017 7:10:37 AM com.google.cloud.tools.appengine.cloudsdk.CloudSdk logCommand
INFO: submitting command: C:\Program Files\Java\jdk1.8.0_121\jre\bin\java.exe -cp C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\platform\google_appengine\google\appengine\tools\java\lib\appengine-tools-api.jar com.google.appengine.tools.admin.AppCfg --disable_update_check stage S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\target\echo-1.0-SNAPSHOT S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\target\appengine-staging
[INFO] GCLOUD: Jun 07, 2017 7:10:37 AM java.util.prefs.WindowsPreferences <init>
[INFO] GCLOUD: WARNING: Could not open/create prefs root node Software\JavaSoft\Prefs at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
[INFO] GCLOUD: Reading application configuration data...
[INFO] GCLOUD: *********************************
[INFO] GCLOUD: Configuration Warning : <application>/<version> XML elements and --application/--version should not be specified when staging
[INFO] GCLOUD:
[INFO] GCLOUD: The following parameters will be scrubbed from app.yaml
[INFO] GCLOUD: application : endpoints-framework-echo
[INFO] GCLOUD: version : 1
[INFO] GCLOUD:
[INFO] GCLOUD: Future versions of staging will fail if application or version is specified.
[INFO] GCLOUD: *********************************
[INFO] GCLOUD:
[INFO] GCLOUD:
[INFO] GCLOUD: Beginning interaction for module default...
[INFO] GCLOUD: 0% Scanning for jsp files.
[INFO] GCLOUD: 0% Generated git repository information file.
[INFO] GCLOUD: Success.
[INFO] GCLOUD: Temporary staging for module default directory left in S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\target\appengine-staging
Jun 07, 2017 7:10:38 AM com.google.cloud.tools.appengine.cloudsdk.CloudSdk logCommand
INFO: submitting command: C:\Program Files (x86)\Google\Cloud SDK\google-cloud-sdk\bin\gcloud.cmd app deploy
[INFO] GCLOUD: You are about to deploy the following services:
[INFO] GCLOUD:  - endpoints-framework-echo/default/20170607t121041 (from [S:\Programming\git repositories\tmp\java-docs-samples\appengine\endpoints-frameworks-v2\backend\target\appengine-staging\app.yaml])
[INFO] GCLOUD:      Deploying to URL: [https://endpoints-framework-echo.appspot.com]
[INFO] GCLOUD:
[INFO] GCLOUD: Beginning deployment of service [default]...
[INFO] GCLOUD: Some files were skipped. Pass `--verbosity=info` to see which ones.
[INFO] GCLOUD: You may also view the gcloud log file, found at
[INFO] GCLOUD: [C:\Users\Eric\AppData\Roaming\gcloud\logs\2017.06.07\12.10.39.138000.log].
[INFO] GCLOUD: #============================================================#
[INFO] GCLOUD: #= Uploading 0 files to Google Cloud Storage                =#
[INFO] GCLOUD: #============================================================#


    ( <---------- this is where it hangs for about 5 minutes)


[INFO] GCLOUD: File upload done.
[INFO] GCLOUD: Updating service [default]...
[INFO] GCLOUD: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................failed.
[INFO] GCLOUD: ERROR: (gcloud.app.deploy) Error Response: [13] An internal error occurred.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 10:20 min
[INFO] Finished at: 2017-06-07T07:20:53-04:00
[INFO] Final Memory: 22M/307M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.google.cloud.tools:appengine-maven-plugin:1.3.1:deploy (default-cli) on project echo: Execution default-cli of goal com.google.cloud.tools:appengine-maven-plugin:1.3.1:deploy failed: Non zero exit: 1 -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException