I can change permission storage folder laravel correctly .

[Phal Pisey]

After I install laravel on App Engine. 

## app.yaml

runtime: php72

runtime_config:
  document_root: public   #folder where index.php is

env_variables:
   APP_KEY: my_key
   APP_DEBUG : true # true or false
   APP_LOG: errorlog
   APP_STORAGE: /tmp
   VIEW_COMPILED_PATH: /tmp
   SESSION_DRIVER: cookie
   CACHE_DRIVER: database
   # Put production environment variables here.
   APP_ENV: production   # local or production
   APP_URL: https://myapp.appspot.com
   #go to generate app key paragraf in this tutorial
  # instead of putting the cache in the database I recommend using redis
   APP_TIMEZONE: UTC #your timezone of choice
  # follow the part of the tutorial on setting up your SQL database
   DB_CONNECTION: mysql
   DB_HOST: localhost
   DB_DATABASE: mydm
   DB_USERNAME: myuser
   DB_PASSWORD: mypass
   DB_SOCKET: my
   QUEUE_DRIVER: database #in case you execute queued jobs

  #we need this for the flex environment
beta_settings:
   # for Cloud SQL, set this value to the Cloud SQL connection name,
   # e.g. "project:region:cloudsql-instance"
   cloud_sql_instances: my

## composer.json

{
    "name": "joselfonseca/laravel-api",
    "description": "Laravel API starter Kit will give you most of the boilerplate that you need for creating Laravel API's",
    "keywords": ["framework", "laravel", "Api", "REST", "oAuth2", "Dingo API"],
    "license": "MIT",
    "type": "project",
    "authors": [
        {
            "name": "Jose Fonseca",
            "email": "jo...@ditecnologia.com",
            "homepage": "https://josefonseca.me",
            "role": "Developer"
        }
    ],
    "require": {
        "php": ">=7.0.0",
        "barryvdh/laravel-cors": "^0.11.0",
        "fideloper/proxy": "~3.3",
        "james-heinrich/getid3": "^1.9",
        "laravel/framework": "5.5.*",
        "laravel/scout": "^3.0",
        "laravel/tinker": "~1.0",
        "laravelcollective/html": "^5.4.0",
        "league/flysystem-aws-s3-v3": "~1.0",
        "league/flysystem-rackspace": "~1.0",
        "predis/predis": "^1.1",
        "superbalist/laravel-google-cloud-storage": "^2.2"
    },
    "require-dev": {
        "filp/whoops": "~2.0",
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "0.9.*",
        "phpunit/phpunit": "~6.0"
    },
    "autoload": {
        "classmap": [
            "database"
        ],
        "psr-4": {
            "App\\": "app/"
        },
        "files": [
            "app/helpers.php"
        ]
    },
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },
    "extra": {
        "laravel": {
            "dont-discover": [
            ]
        }
    },
    "scripts": {
        "post-root-package-install": [
            "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "@php artisan key:generate"
        ],
        "post-autoload-dump": [
            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover"
        ],
        "post-install-cmd": [
            "chmod -R 777 bootstrap\/cache",
            "chmod -R 777 storage",
            "chmod -R gu+w storage",
            "chmod -R guo+w storage",
            "php artisan cache:clear"
        ],
        "post-update-cmd": [
            "Illuminate\\Foundation\\ComposerScripts::postUpdate",
            "@php artisan optimize"
        ]
    },
    "config": {
        "preferred-install": "dist",
        "sort-packages": true,
        "optimize-autoloader": true
    }
}

[Elliott (Cloud Platform Support)]

Hello Phal,

Please note that Google Groups are reserved for general Google Cloud Platform and product discussions and not for reporting issues, which is why I suggest moving the troubleshooting to Issue Tracker, where issues can be turned private in case we need to gather any project specific details.