Problems with "older entries" / pagination

Hello,

i just found only very old posts to that topic.

My blog has a standard blog post view as starting page – no static page. When I click on older posts (https://different-thinking.de/page/2/) I get an 404 error and the web browsers error site – not the 404 site from wordpress

My permalik structure is Post Name

I already deactivated all plugins – without any effect.

My .htaccess looks like this:

# 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

<Files wp-login.php>
  AuthName "Admin-Bereich"
  AuthType Basic
  AuthGroupFile /dev/null
  AuthUserFile /www/htdocs/rsieber//.htpasswd
  require valid-user
</Files>

<FilesMatch "(\.htaccess|\.htpasswd|wp-config\.php|liesmich\.html|readme\.html)">
  order deny,allow
  deny from all
</FilesMatch>

Redirect 301 /obashi-webinar /obashi-webinar-replay

I have no idea what’s going wrong. I’m sure it worked and I did not alter any theme or wordpress code.

I would be glad to get your help!

Thanks in advance,

Robert