Collabora / NC / NGINX / Ubuntu - grey screen while opening docs

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7

Hello,

#Edit host traffic local.
#Add host nextclouddomain or collaboradomain
nano /etc/hosts

127.0.0.1 XXX XXX XXX domainenextcloud.com collaboradomain.com

and

semanage port --add --type http_port_t --proto tcp 9980

Link : Install Nginx + Nextcloud 12 + Php-Fpm + MariaDB 10 + Collabora Online on Centos 7