So, I updated to NextCloud 13 and didn’t realize how much I’d miss Keeweb.
I use Keepass on my home desktop and sometimes need to access stuff in that database elsewhere. I usually keep the Keepass db updated on my NextCloud installation to back up the file.
I was disappointed it didn’t support 13, but then I found this:
https://help.nextcloud.com/t/nextcloud-13-and-keeweb/27063
And made this simple edit:
root@miss [~]# grep 13 /home/cloud/public_html/apps/keeweb/appinfo/info.xml nextcloud min-version="11" max-version="13"
And that worked!