更改laravel文件夹结构时出现密钥问题（密码错误）

I am changing laravel 5.3 folder structure. What I exactly do is basically move all the content from public folder to root folder, and then all the other files besides public folder to the new created folder - project. Then I update the require paths in index.php, and when I try to run the project via XAMPP, I'm getting this error.

I am pretty sure that the key is set correctly, because I haven't changed anything else but the folder structure and paths, and the project worked before this folder structure change. It seems to me that program can't locate the .env file.

Try running

php artisan config:clear

and

php artisan key:generate

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