Thank you for creating an open-source project like Flarum. It's excellent and its philosophy is contagious.
After being encouraged to use Flarum, I've encountered a couple of difficulties and doubts while installing Flarum.
Specifically, version 1.8.9, which I understand is the latest version before V2 which is in beta.
I've been researching and couldn't find a guide. Only this link where version 1.8.0 is installed to 1.8.1:
https://docs.flarum.org/install/
I installed version 1.8.1 and the SSL terminal sent me a message indicating that the mail system needs to be updated.
For this reason, I thought that perhaps by using version 1.8.9 this problem would already be fixed.
But I've found that I can't install version 1.8.9 from Composer, at least not as far as I've tried.
NOTE: in the Git repository, there seem to be 2 different branches of Flarum:
where version 1.8.9 appears
and tags where the latest version appears as 1.8.1
So here I don't know which is the main and modern branch to start my community.