1.http://blog.csdn.net/day_day_up1991/article/details/52051963

Running "shell:buildAppEnginePackage" (shell) task
Traceback (most recent call last):
  File "./build/build_app_engine_package.py", line 12, in <module>
    import requests
ImportError: No module named requests
Warning: Command failed: /bin/sh -c python ./build/build_app_engine_package.py src out/app_engine
Traceback (most recent call last):
  File "./build/build_app_engine_package.py", line 12, in <module>
    import requests
ImportError: No module named requests
 Use --force to continue.

Aborted due to warnings.

2.环境变量没设对

Compiling node_modules/webrtc-adapter/out/adapter.js,src/web_app/js/analytics.js,src/web_app/js/enums.js,src/web_app/js/appcontroller.js,src/web_app/js/call.js,src/web_app/js/constants.js,src/web_app/js/infobox.js,src/web_app/js/peerconnectionclient.js,src/web_app/js/remotewebsocket.js,src/web_app/js/roomselection.js,src/web_app/js/sdputils.js,src/web_app/js/signalingchannel.js,src/web_app/js/stats.js,src/web_app/js/storage.js,src/web_app/js/util.js,src/web_app/js/windowport.js -> out/app_engine/js/apprtc.debug.js
Warning: Error: Unable to access jarfile undefined
 Use --force to continue.```

export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin