7.3php missing extension mysqlnd

Updating my php from 7.2 to 7.3. When I change /etc/nginx/conf.d/librenms.conf so it’s pointing to 7.3 location and restart nginx I get a missing php extension “mysqlnd” window when I refresh the page. What’s the best way to resolved?

please run ./validate.php

Thanks Kevin,
This is the output from ./validate.php

Component Version
LibreNMS 1.63-56-g27cc5ac19
DB Schema Not Connected (0)
PHP 7.3.18-1+ubuntu18.04.1+deb.sury.org+1
Python 3.6.9
MySQL ?
RRDTool 1.7.0
SNMP NET-SNMP 5.7.3

====================================

[OK] Composer Version: 1.10.6
[OK] Dependencies up-to-date.
Could not connect to database, check logs/librenms.log.

Your PHP is missing required mysql extension(s), please install and enable.
Check the install docs for more info: https://docs.librenms.org/Installation/
root@librenms:/opt/librenms#

I was able to install the mysql php extension and I now have my connection to the database again. However I have a new set of errors. I’ve installed each extension below by doing: apt install php-mbstring, apt install php-xml, apt install php-dom, but still no joy, instead it created a php7.4 folder and put the extensions in there but I’m running 7.3 so I’m not sure why that happened.

root@librenms:/opt/librenms# ./validate.php

Component Version
LibreNMS 1.63-56-g27cc5ac19
DB Schema 2020_04_19_010532_eventlog_sensor_reference_cleanup (164)
PHP 7.3.18-1+ubuntu18.04.1+deb.sury.org+1
Python 3.6.9
MySQL 10.1.44-MariaDB-0ubuntu0.18.04.1
RRDTool 1.7.0
SNMP NET-SNMP 5.7.3

====================================

[OK] Composer Version: 1.10.6
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct
[FAIL] Missing PHP extension: mbstring
[FIX]:
Please install mbstring
[FAIL] Missing PHP extension: xml
[FIX]:
Please install xml
[FAIL] Missing PHP extension: dom
[FIX]:
Please install dom

OMG!!! I didn’t specify 7.3 when I installed the extensions. Once I did that my validate checks out.