我对部署过程以及如何解释Heroku上的构建日志非常不熟悉。我正在尝试部署我的Phoenix Elixir应用程序，并且已经完成了https://hexdocs.pm/phoenix/heroku.html上概述的过程。但是，我的构建日志中出现以下错误：

npm ERR! Linux 4.4.0-1062-aws
   npm ERR! argv "/tmp/build_cb2fdf13a1883f06eae3f7c5297f7b64/.heroku/node/bin/node" "/tmp/build_cb2fdf13a1883f06eae3f7c5297f7b64/.heroku/node/bin/npm" "run" "deploy"
   npm ERR! node v6.9.2
   npm ERR! npm  v3.10.9
   npm ERR! code ELIFECYCLE
   npm ERR! @ deploy: `webpack --mode production`
   npm ERR! Exit status 1
   npm ERR!
   npm ERR! Failed at the @ deploy script 'webpack --mode production'.
   npm ERR! Make sure you have the latest version of node.js and npm installed.
   npm ERR! If you do, this is most likely a problem with the  package,
   npm ERR! not with npm itself.
   npm ERR! Tell the author that this fails on your system:
   npm ERR!     webpack --mode production
   npm ERR! You can get information on how to open an issue for this project with:
   npm ERR!     npm bugs
   npm ERR! Or if that isn't available, you can get their info via:
   npm ERR!     npm owner ls
   npm ERR! There is likely additional logging output above.

   npm ERR! Please include the following file with any support request:
   npm ERR!     /tmp/build_cb2fdf13a1883f06eae3f7c5297f7b64/assets/npm-debug.log

我已经按照日志的建议更新到node.js和npm的最新版本。
谢谢你！