Wordpress permalinks is wrong. It wants me to change my htaccess file. But then site crashes

Question

When I try to access wp-admin, and such, wordpress links me wrong, the link is like duplicate. I've read somewhere that I should resave my permalinks. But when I press save then I get this:

http://example.com/wp-admin/example.com/wp-admin/options-permalink.php?settings-updated=true

And at the bottom of permalinks page there is this text that says I should copy paste some code into .htaccess (this code):

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

But if I do that then I get a 500 server error when I try to visit my homepage.

What can be wrong?

Answer 1

If you look at the recommended .htaccess files for WordPress, there's a difference (yours has example.com/, whereas the recommendation is /.

# 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

I don't know if that's what's causing the duplication of example.com/wp-admin/ in your URL. I suspect that is due to something incorrect in your wp-config.php file, or perhaps in your database.