webpack-dev-serverの起動ができない

webpack-dev-serverを起動しようとしたところ、起動できませんでした。

エラーメッセージ

$ ./webpack-dev-server 
webpack config /home/user/projects/phaser_trial/bin/config/webpack/development.js not found, please run 'bundle exec rails webpacker:install' to install Webpacker with default configs or add the missing config file for your custom environment.

'bundle exec rails webpacker:install' を実行してくださいとありますが、
実行した後も変わりません。

$ bundle exec rails webpacker:install
Spring was unable to find your config/application.rb file. Your project root was detected at /home/user/projects/phaser_trial/bin, so spring looked for /home/user/projects/phaser_trial/bin/config/application.rb but it doesn't exist. You can configure the root of your application by setting Spring.application_root in config/spring.rb.

最後の方に"カスタム環境用の設定ファイルを追加してください。"
とありますが、その設定ファイルの場所、内容がわかりません。

使用環境

Lubuntu 14.04.5
node v6.11.2
npm v3.10.10

どうかよろしくお願いします。

###追記

npm startの実行ログ

$ npm start
npm ERR! missing script: start

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/user/.npm/_logs/2018-09-16T12_30_18_137Z-debug.log

2018
10 info it worked if it ends with ok
21 verbose cli [ '/usr/local/bin/node',
31 verbose cli   '/usr/local/bin/npm',
41 verbose cli   'install',
51 verbose cli   '--ignore-scripts',
61 verbose cli   '@types/bluebird@ts3.0',
71 verbose cli   '@types/commondir@ts3.0',
81 verbose cli   '@types/cssnano@ts3.0',
91 verbose cli   '@types/detect-node@ts3.0',
101 verbose cli   '@types/extsprintf@ts3.0',
111 verbose cli   '@types/flush-write-stream@ts3.0',
121 verbose cli   '@types/is-callable@ts3.0',
131 verbose cli   '@types/node-forge@ts3.0',
141 verbose cli   '@types/object-keys@ts3.0',
151 verbose cli   '@types/parallel-transform@ts3.0',
161 verbose cli   '@types/pbkdf2@ts3.0',
171 verbose cli   '@types/stream-each@ts3.0',
181 verbose cli   '@types/stream-shift@ts3.0',
191 verbose cli   '@types/uglify-es@ts3.0',
201 verbose cli   '@types/webpack@ts3.0',
211 verbose cli   '--save-dev',
221 verbose cli   '--user-agent=typesInstaller/3.0.3' ]
232 info using npm@6.2.0
243 info using node@v10.8.0
254 verbose npm-session 5bd6d89747b83a45
265 silly install loadCurrentTree
276 silly install readLocalPackageData
287 http fetch GET 200 https://registry.npmjs.org/@types%2fcommondir 530ms
298 http fetch GET 200 https://registry.npmjs.org/@types%2fcssnano 531ms
309 http fetch GET 200 https://registry.npmjs.org/@types%2fdetect-node 530ms
3110 http fetch GET 200 https://registry.npmjs.org/@types%2fextsprintf 530ms
3211 silly registry:manifest no matching version for @types/commondir@ts3.0 in the cache. Forcing revalidation
3312 http fetch GET 200 https://registry.npmjs.org/@types%2fflush-write-stream 536ms
3413 http fetch GET 200 https://registry.npmjs.org/@types%2fis-callable 549ms
3514 silly pacote tag manifest for @types/cssnano@ts3.0 fetched in 574ms
3615 silly pacote tag manifest for @types/extsprintf@ts3.0 fetched in 574ms
3716 silly pacote tag manifest for @types/detect-node@ts3.0 fetched in 581ms
3817 silly pacote tag manifest for @types/flush-write-stream@ts3.0 fetched in 581ms
3918 silly pacote tag manifest for @types/is-callable@ts3.0 fetched in 589ms
4019 http fetch GET 200 https://registry.npmjs.org/@types%2fobject-keys 621ms
4120 http fetch GET 200 https://registry.npmjs.org/@types%2fstream-each 58ms
4221 http fetch GET 200 https://registry.npmjs.org/@types%2fpbkdf2 61ms
4322 http fetch GET 304 https://registry.npmjs.org/@types%2fcommondir 105ms (from cache)
4423 http fetch GET 200 https://registry.npmjs.org/@types%2fparallel-transform 633ms
4524 http fetch GET 200 https://registry.npmjs.org/@types%2fstream-shift 52ms
4625 silly fetchPackageMetaData error for @types/commondir@ts3.0 No matching version found for @types/commondir@ts3.0
4726 http fetch GET 200 https://registry.npmjs.org/@types%2fuglify-es 56ms
4827 silly pacote tag manifest for @types/object-keys@ts3.0 fetched in 650ms
4928 silly pacote tag manifest for @types/stream-each@ts3.0 fetched in 80ms
5029 silly pacote tag manifest for @types/pbkdf2@ts3.0 fetched in 81ms
5130 silly pacote tag manifest for @types/parallel-transform@ts3.0 fetched in 654ms
5231 silly pacote tag manifest for @types/uglify-es@ts3.0 fetched in 71ms
5332 http fetch GET 200 https://registry.npmjs.org/@types/stream-shift/-/stream-shift-1.0.0.tgz 56ms
5433 silly pacote tag manifest for @types/stream-shift@ts3.0 fetched in 121ms
5534 http fetch GET 200 https://registry.npmjs.org/@types%2fwebpack 820ms
5635 http fetch GET 200 https://registry.npmjs.org/@types%2fbluebird 1441ms
5736 silly pacote tag manifest for @types/webpack@ts3.0 fetched in 837ms
5837 silly pacote tag manifest for @types/bluebird@ts3.0 fetched in 1464ms
5938 http fetch GET 200 https://registry.npmjs.org/@types%2fnode-forge 1646ms
6039 silly pacote tag manifest for @types/node-forge@ts3.0 fetched in 1655ms
6140 timing stage:rollbackFailedOptional Completed in 1ms
6241 timing stage:runTopLevelLifecycles Completed in 2984ms
6342 verbose type tag
6443 verbose stack @types/commondir: No matching version found for @types/commondir@ts3.0
6543 verbose stack     at pickManifest (/usr/local/lib/node_modules/npm/node_modules/npm-pick-manifest/index.js:65:11)
6643 verbose stack     at fetchPackument.then.packument (/usr/local/lib/node_modules/npm/node_modules/pacote/lib/fetchers/registry/manifest.js:52:18)
6743 verbose stack     at tryCatcher (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/util.js:16:23)
6843 verbose stack     at Promise._settlePromiseFromHandler (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/promise.js:512:31)
6943 verbose stack     at Promise._settlePromise (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/promise.js:569:18)
7043 verbose stack     at Promise._settlePromise0 (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/promise.js:614:10)
7143 verbose stack     at Promise._settlePromises (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/promise.js:693:18)
7243 verbose stack     at Async._drainQueue (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/async.js:133:16)
7343 verbose stack     at Async._drainQueues (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/async.js:143:10)
7443 verbose stack     at Immediate.Async.drainQueues [as _onImmediate] (/usr/local/lib/node_modules/npm/node_modules/bluebird/js/release/async.js:17:14)
7543 verbose stack     at runCallback (timers.js:693:18)
7643 verbose stack     at tryOnImmediate (timers.js:664:5)
7743 verbose stack     at processImmediate (timers.js:646:5)
7844 verbose cwd /home/user/.cache/typescript/3.0
7945 verbose Linux 4.15.0-34-generic
8046 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "--ignore-scripts" "@types/bluebird@ts3.0" "@types/commondir@ts3.0" "@types/cssnano@ts3.0" "@types/detect-node@ts3.0" "@types/extsprintf@ts3.0" "@types/flush-write-stream@ts3.0" "@types/is-callable@ts3.0" "@types/node-forge@ts3.0" "@types/object-keys@ts3.0" "@types/parallel-transform@ts3.0" "@types/pbkdf2@ts3.0" "@types/stream-each@ts3.0" "@types/stream-shift@ts3.0" "@types/uglify-es@ts3.0" "@types/webpack@ts3.0" "--save-dev" "--user-agent=typesInstaller/3.0.3"
8147 verbose node v10.8.0
8248 verbose npm  v6.2.0
8349 error code ETARGET
8450 error notarget No matching version found for @types/commondir@ts3.0
8551 error notarget In most cases you or one of your dependencies are requesting
8651 error notarget a package version that doesn't exist.
8752 verbose exit [ 1, true ]
88