"Not found" error

[Roomiiaan]

Hey guys, I'm sure this is not the first time this question has been asked.

Unfortunately, when I want to call up a URL, I have the problem that I always come to the "Not found" page (not being redirected)

My .htaccess file

# BEGIN YOURLS
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /go/
RewriteCond %{HTTPS} !=on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^.*$ /go/yourls-loader.php [L]
</IfModule>
# END YOURLS

Maybe anyone can help me. Thanks!