错误解决：laravel没有APP_KEY导致The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct k

解决方案，生成laravel app_key，命令： [html]  view plain  copy php artisan key:generate     错误提示：The only supported ciphers are AES-128-CBC and AES-256-CBC with the correct key lengths.

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