I setup WordPress following this guide -- https://www.digitalocean.com/community/articles/how-to-install-wordpress-with-nginx-on-centos-6--2. Than I have installed WordPress Importer plugin. Changed file permissions by running these commands -- chown -R root:root .
chown -R nginx:nginx wp-content wp-admin/update.php wp-admin/update-core.php
wp-admin/network/update.php wp-admin/network/update-core.php. When I'm trying to import, after choosing the file to upload and pressing 'Upload file and import' button, I'm getting white page, showing left vertical menu only. No error messages or something... What am I doing wrong?