composer installを実行したいがエラーが出てしまう。解決方法がわからない。

Question

laravel + nuxtでアプリを作成しております。

現状

composer installをしようとしておりますが、エラーが出てしまいます。

エラー文

oot@f5fc0080adb6:/var/www# composer install
Installing dependencies from lock file (including require-dev)
Verifying lock file contents can be installed on current platform.
Nothing to install, update or remove
Generating optimized autoload files
Class App\Http\Controllers\Api\ParentController located in ./app/Http/Controllers/ParentController.php does not comply with psr-4 autoloading standard. Skipping.
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
PHP Fatal error:  Uncaught Error: Class 'PhpOption\Option' not found in /var/www/vendor/laravel/framework/src/Illuminate/Support/Env.php:81
Stack trace:
#0 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1018): Illuminate\Support\Env::get('APP_SERVICES_CA...')
#1 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(936): Illuminate\Foundation\Application->normalizeCachePath('APP_SERVICES_CA...', 'cache/services....')
#2 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/ComposerScripts.php(57): Illuminate\Foundation\Application->getCachedServicesPath()
#3 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/ComposerScripts.php(45): Illuminate\Foundation\ComposerScripts::clearCompiled()
#4 phar:///usr/local/bin/composer/src/Composer/EventDispatcher/EventDispatcher.php(322): Illuminate\Foundation\ComposerScripts::postAutoloadDump(Object(Composer\Script\Event))
#5 phar:///usr/local/bin/composer/src/Composer/EventDispatcher/EventDispatcher.php(218): Composer\EventD in /var/www/vendor/laravel/framework/src/Illuminate/Support/Env.php on line 81

Fatal error: Uncaught Error: Class 'PhpOption\Option' not found in /var/www/vendor/laravel/framework/src/Illuminate/Support/Env.php:81
Stack trace:
#0 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(1018): Illuminate\Support\Env::get('APP_SERVICES_CA...')
#1 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(936): Illuminate\Foundation\Application->normalizeCachePath('APP_SERVICES_CA...', 'cache/services....')
#2 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/ComposerScripts.php(57): Illuminate\Foundation\Application->getCachedServicesPath()
#3 /var/www/vendor/laravel/framework/src/Illuminate/Foundation/ComposerScripts.php(45): Illuminate\Foundation\ComposerScripts::clearCompiled()
#4 phar:///usr/local/bin/composer/src/Composer/EventDispatcher/EventDispatcher.php(322): Illuminate\Foundation\ComposerScripts::postAutoloadDump(Object(Composer\Script\Event))
#5 phar:///usr/local/bin/composer/src/Composer/EventDispatcher/EventDispatcher.php(218): Composer\EventD in /var/www/vendor/laravel/framework/src/Illuminate/Support/Env.php on line 81

$ docker-compose exec workspace bash
このコマンドでdockerコンテナ内に入り、npm installを実行。

そのあとにcomposer installを実行しました。

　
正常に動作させるにはなにが必要かがわかりません。詳しい方、教えてください。宜しくお願いします.

Answer 1

Installing dependencies from lock file (including require-dev)

Verifying lock file contents can be installed on current platform.

この辺りで、Composerでのvendorのインストールは成功している。

失敗しているのはcomposerの事後処理

Generating optimized autoload files

です。
この時にParentControllerでPhpOption\Optionを解決できなく落ちているようです。

npmは関係ありません。