with bitrix enviroment installed like a base webserver, my drupal installation show some issues to create the styles.

After check permissions from filesystem and the configuration of apache they don't show error then check the nginx configuration the problem could be the next couple of lines

with bitrix enviroment
/etc/nginx/bx/conf/bitrix.conf

if you don't have bitrix and just have nginx the config file is in
/etc/nginx/nginx.conf