[Help] I have been having ALL of the possible issues with NextCloud AIO and I'm about to give up completely if I can't get it working soon

I've NEVER had this many problems with a docker container before, this is getting WAY past the point of being ridiculous.

I'm trying to set up the nextcloud AIO for docker behind NGINX Proxy Manager. Right now, I have everything set up such that I can go to the URL that I set up and get to a nextcloud page.

But the only page I can access is an error page that looks like this:

I have no idea how to fix this. I've already set 'maintenance'=>false in my config.php file. I'm completely at a loss here, I can't do ANYTHING else in nextcloud other than look at this stupid error page. The AIO documentation is completely worthless here, it doesn't give any guidance. And google isn't helping either, every thread either says to add the above to my config (which I obviously already did) or just restart apache (which I've also done). I'm getting seriously annoyed with this and I'm about to give up altogether unless someone here knows how to get past this stupidity.

Edit: Okay I've done something REALLY stupid now. I figured I could just re-install nextcloud to see if I could fix this. So, I removed all of the containers, deleted the data and database folders, re-made the folders, and re-deployed everything. Now NOTHING works and I can't get nextcloud to re-do its initial setup. But it looks like now maybe it is? IDK I'm lost here, I'm annoyed and it's late and I should probably stop.

So apparently nuking everything and letting nextcloud re-install itself fixed this, somehow. I have no idea why.