Unable to get stalwart to properly install under LinuxMint 22.2 ... ???

[HippoPerson]

I've decided to try stalwart on my LinuxMint 22.2 machine, but I'm having trouble getting it installed. The following explains what I did ...

On my Mint 22.2 machine with the OS installed in a completely standard way, I precisely followed the stalwart installation instructions on this web site:

https://stalw.art/docs/install/platform/linux

I got to the point of running sh install.sh as described in those instructions, and it told me that the stalwart configuration web server was indeed set up to be accessed via ...

http://my.mint.host.com:8080/login

... and it gave me a user ID and password for logging in to that web-based config server.

But when I went to that web site, all I got was a blank web page with no way to enter anything and no way to interact with that web page. And I didn't get any HTTP error.

And when I tested port 8080 by doing telnet my.mint.host.com 8080, I indeed got a connection, but when I ran an HTTP query to the /login address from within that telnet session, it just hung forever, which is parallel to what happened with the web-based access that I described above returning a blank page with no way to interact with it.

And I made sure via ufw that port 8080 is indeed open on my machine.

So then, just for testing, I went to my Debian 13 machine and went through the exact, same stalwart installation procedure, in precisely the same way as I did under Mint ... and it worked with no problems: I indeed got a proper login window on that Debian machine when I went to ...

http://my.debian.host.com:8080/login

... and I was able to log in and start the stalwart installation there, which worked fine. Therefore, it seems to me that the stalwart software itself indeed can install and run, at least under some linux OS's.

So my question is this: has anyone actually gotten stalwart to work under LinuxMint 22.2? If so, are there any special, additional installation steps that might be needed before it will actually install and function properly under that OS?

Note that I have already posted this question on the LinuxMint forum site, but of course I also want to post it here.

Thank you in advance for any thoughts and ideas.