Is there a conflict between Debian Bullseye and nginx?

[Mike Lieberman]

On Fri, 2022-12-16 at 15:59 +0000, Francis Daly wrote:

> On Fri, Dec 16, 2022 at 04:27:15PM +0800, Mike Lieberman wrote:
> 
> Hi there,
> 
> You have configured your nginx to listen on port 80 on all IP addresses.
> 
> You have configured your apache to listen on port 80 on all IP addresses.
> 
> They can't both do that at the same time.
> 
> The first one works, the other one fails.
> 
> If you want both to be running, you must configure them to listen on
> different IP:ports from each other.
> 
> This is normal.
> 
> Cheers,
> 
>         f

Actually, I didn't configure it on any port. I was following a guide in https://www.linuxcapable.com/how-to-install-nginx-with-lets-encrypt-tls-ssl-on-debian-11-bullseye. However I can't get brotli to be accepted in /etc/nginx/nginx.conf (as specified in the guide) and nginx you say I have it looking at port 80, but (a) I don't [at least not by my direction] and the guide does not specify anything regarding that. Clearly the guide is wrong and I will have to find another way to approach this.

Thank you for your clear comments. It is I who is over my head.