如果Laravel 報錯 file_put_contents(): failed to open stream

問題解決方法

1. 執行命令 php artisan cache:clear 並賦予 /storage 文件夾讀寫權限： chmod -R 777 storage；

2. 若在執行 php artisan cache:clear 時出現錯誤：Uncaught UnexpectedValueException: The stream or file "/storage/logs/laravel.log" could not be opened: failed to open stream: Permission denied in /vendor/monolog/monolog/src/Monolog/Handler/StreamHandler.php:87，需要賦予 /storage/log 讀寫權限： chmod -R 777 storage/logs；

3. 此時再執行 php artisan cache:clear，若繼續出錯：[ErrorException] file_put_contents(/bootstrap/cache/services.php): failed to open stream: Permission denied，需要賦予 bootstrap/cache 讀寫權限：chmod -R 777 bootstrap/cache；

4. 再執行 php artisan cache:clear，若仍然出錯：[PDOException] SQLSTATE[HY000] [1045] Access denied for user 'xxx'@'127.0.0.1' (using password: YES)，則需要查看 laravel 的數據庫配置是否正確。