HTTP 500 Error due to .htaccess file multisite

Hi everyone,

I am trying to install a WordPress Multisite in a subfolder. Unfortunately, I can’t reach my site any more due to a HTTP 500 Error, which occured after editing the .htaccess file in my FTP system.

WordPress told me to add the following code in the .htaccess file:

‘RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ – [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ – [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]’

This code however, doesn’t seem to do the trick. Does anyone have any suggestions as to how to solve this?

The website for which I am trying to install Multisite is: https://eassistent.nl/

Thanks very much for your help!