I run nginx/1.17.1 + PHP 7.4.0-dev on linux/64. It's an in-production
setup, with lots of directly hosted, as well as proxied, SSL-secured
webapps.

I've now installed Nextcloud v16.0.3. For the moment, directly hosted
on Nginx, not-yet proxied.

It installs to DB with no errors. &, The site's accessible hosted on
Nginx; I can get to the app's login page -- securely.

But when I enter login credentials & submit, I get an nginx/fastcgi

http fastcgi header: "Status: 500 Internal Server Error"

and in Nextcloud logs,

"Something is wrong with your openssl setup: error:02001002:system
library:fopen:No such file or directory,"

I've posted an issue, with config & error details, here:

https://github.com/nextcloud/server/issues/16378

Since I've got lots of other webapps running securely with no issues,
and I _am_ able to get to Nextcloud's secure login page with my
Nginx-served SSL cert, I suspect the problem's in Nextcloud -- NOT nginx.

But thought I'd check-in here ... anyone successfully using Nextcloud on
Nginx that can suggest what the problem is, or a fix?

OR, *is* this an Nginx issue that I simply haven't recognized ? Header
I've missed, or misconfigured? Not immediately clear to me why it
wouldn't surface on the login page at 1st connect ...
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