I first tryed installing nginx from the config menu of my home automation server (Openhabian). But this ended in errors.
So I uninstalled nginx and removed all related directories to start over.
I followed your howto about installing nginx on debian 10 but after installation is finished I get an error. I didn ’t write it down, but it was vague. Then I tried systemctl status nginx:

* nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Tue 2020-05-05 13:39:12 CEST; 11min ago
     Docs: man:nginx(8)

Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.

and systemctl status nginx.service:

* nginx.service - A high performance web server and a reverse proxy server
   Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Tue 2020-05-05 13:52:47 CEST; 30s ago
     Docs: man:nginx(8)
  Process: 2822 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=1/FAIL
lines 1-5/5 (END)

Hen I go to my server-IP I do get the nginx-landing page. But when I do: ‘sudo systemctl reload nginx’

I get:

nginx.service is not active, cannot reload.

The command: 'journalctl -xe’ gives me a lot of line that I understand nothing about and I don’t find any relation with nginx I think:

-- The unit UNIT has successfully entered the 'dead' state.
mei 05 13:38:42 HABIAN systemd[2022]: Closed GnuPG cryptographic agent (ssh-agent emulation).
-- Subject: A stop job for unit UNIT has finished
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- A stop job for unit UNIT has finished.
--
-- The job identifier is 20 and the job result is done.
mei 05 13:38:42 HABIAN systemd[2022]: dbus.socket: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support: https://www.debian.org/support

I hope you can help me?