Error in Plesk after update: Template_Exception: nginx: [emerg] unknown directive "brotli" in /etc/nginx/conf.d/brotli.conf:1 nginx: configuration file /etc/nginx/nginx.conf test failed

Symptoms

After a Plesk update, the following error is displayed in Plesk:

Unable to generate the web server configuration file on the host <example.com> because of the following errors:
Template_Exception: nginx: [emerg] unknown directive "brotli" in /etc/nginx/conf.d/brotli.conf:1
nginx: configuration file /etc/nginx/nginx.conf test failed
file: /usr/local/psa/admin/plib/Template/Writer/Webserver/Abstract.php
line: 75
code: 0
Please resolve the errors in web server configuration templates and generate the file again.

Cause

This is considered a Plesk bug #PPPM-12735 which will be fixed in an upcoming product release.
It is related to the lack of Lock usage in the nginx driver methods for module management.

Resolution