问Heroku节点应用程序部署失败

EN

+ git push git@ec2-54-187-2-82.us-west-2.compute.amazonaws.com:sky-tickets-dev/skytickets-front.git stage
Everything up-to-date
+ git push -f git@heroku.com:skytickets-stage.git stage:master
Fetching repository, done.

-----> Fetching custom git buildpack... done
-----> Multipack app detected
=====> Downloading Buildpack: https://github.com/heroku/heroku-buildpack-nodejs.git
=====> Detected Framework: Node.js

       Node engine:         0.10.21
       Npm engine:          1.2.x
       Start mechanism:     Procfile
       node_modules source: prebuilt
       node_modules cached: true

       NPM_CONFIG_PRODUCTION=true
       NODE_MODULES_CACHE=true

       PRO TIP: Avoid checking node_modules into source control
       See https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git-

-----> Installing binaries
       Downloading and installing node 0.10.21...
       Resolving npm version 1.2.x via semver.io...
       Downloading and installing npm 1.2.8000 (replacing version 1.3.11)...

-----> Building dependencies
       Rebuilding any native modules for this architecture

-----> Checking startup method
       Found Procfile

-----> Finalizing build
       Creating runtime environment
       Exporting binary paths
       Cleaning up build artifacts
       Caching node_modules for future builds
       Build successful!
       skytickets@0.0.1 /tmp/build_604cc19d81766dfe5375fc2195373f74
       ├── UNMET DEPENDENCY async@0.2.x
       ├── UNMET DEPENDENCY basic-logger@0.4.x
       ├── UNMET DEPENDENCY cloudinary@1.0.x
       ├── UNMET DEPENDENCY express@3.4.x