wordpress 403错误(复制器安装)

I have duplicated my site using the duplicator plugin from wordpress.org. However, when I wanted to run this on a new hosting service, first I encountered a 504 gateway timeout error. Therefore, I extracted the .zip contents and chose for manual package extraction, which solved the problem, but after the second step, again in the final step (test), I run into a 403 access denied error.

  1. I checked my access permissions, they were OK. (755 for folders and 644 or 666 for files)
  2. I checked my .htaccess file, it seemed to be OK. (I deleted it and the error appeared again).
  3. There are no plugins on my domain or host which might cause interference as I am installing the package afresh.

I don't know what is causing this problem.

My .htaccess file contents:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress