next_posts_link permalinks

Hi! I have problem with next_posts_link and permalinks. When I set permalinks to default e.g.?p=123 next_posts_link is working ok. But when I set to /%category%/%postname%/ next_posts_link is redirecting me to 404 page. I must admit that i have page with custom post type “events”. Summary up:
https://www.domain.com/?p=events&?page=2 is working
https://www.domain.com/events/page/2 404

my .htcaccess file:

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