SuiteCRM UBUNTU 19.10 SuiteCRM License agreement screen not displaying

Hello again, everyone.

I’m trying to install SuiteCRM 7.11.13 on UBUNTU 19.10, and I was able to install PHP 7.3 (included php7.3-fpm), the webserver Nginx, and the database MariaDB, but I got trouble install SuiteCRM and I don’t understand why.
First, I was able to enter these command lines:

export VER=“7.11.8”
wget https://github.com/salesagility/SuiteCRM/archive/v${VER}.tar.gz
tar xvf v${VER}.tar.gz
rm v${VER}.tar.gz

sudo mkdir /srv/suitecrm
sudo rsync -avv SuiteCRM-${VER}/ /srv/suitecrm*

chown -R www-data:www-data /srv/suitecrm/
cd /srv/suitecrm/
**chmod -R 775 ***

Then, I configurede Nginx with this command line:

sudo vim /etc/nginx/conf.d/suitecrm.conf

I even inserted these lines on the file before saving it with :wq!:

server {
server_name crm.example.com;
client_max_body_size 50M;
root /srv/suitecrm;

** **location / {** ** try_files $uri /index.php;** **

}
location ~ .php$ {
try_files $uri =404;
#fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
fastcgi_pass localhost:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
error_log /var/log/nginx/suitecrm_error.log;
access_log /var/log/nginx/suitecrm_access.log;
location ~ /.ht {
deny all;
}
}

I then entred these 2 command line:

sudo systemctl start nginx php-fpm

sudo systemctl enable nginx php-fpm:

However, when I open a browser on UBUNTU and go to the server name, it display the screen ?Adress not found? instead of the SuiteCRM License agreement?s screen.

I believe the source of the problem is that I badly configured the webserver Nginx to the link.
Can someone please help me how to clear that problem?