Nextcloud broken with upgrade to php7.3 in Debian testing sid

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Nextcloud version : 14.0.4
Operating system and version : Debian testing sid
Apache or nginx version (eg, Apache 2.4.25): 2.4.37
PHP version (eg, 7.1): 7.2

The issue you are facing: No connection to nextcloud server from a webpage or the nextcloud application.

Is this the first time you’ve seen this error? (Y/N): Yes

Steps to replicate it:

  1. From the nextcloud application, I was getting the error “unable to connect to
  2. From firefox, I was only seeing a blank page at

The output of your Nextcloud log in /var/data.nextcloud/nextcloud.log >:

The Problem
Apache was configured to use the php7.3 module on upgrade to php7.3.

Disable the Apache php7.2 module, enable the Apache php7.3 module, and restart the Apache webserver.

I posted instructions at my website:

Here are the commands I used.

sudo a2dismod php7.2

sudo a2enmod php7.3

sudo systemctl restart apache2 & sudo systemctl status apache2

I have since upgrade to Nextcloud 15.0.0 without any problems.