Error base_template_class is deprecated

[sebastian-lenz]

Description

When running Craft CMS the following php error is triggered:

PHP Deprecated: The "base_template_class" option on Twig\Environment is 
deprecated since Twig 2.7.0. 
in vendor/twig/twig/src/Environment.php on line 121

The option base_template_class is set in the View class here. This is related to #4704.

This is a documented behavior of twig, please refer to their docs:
https://twig.symfony.com/doc/2.x/deprecated.html#environment

Steps to reproduce

1. Open any page in Craft, the admin login page for example.
2. Check the error log of the web server or the console output of XDebug.

Additional info

• Craft version: Craft Solo 3.2.10
• PHP version: 7.3.8
• Database driver & version: MySQL 5.7.27

[brandonkelly]

Great.

[sebastian-lenz]

Sorry for that one, I'm just the messenger.

[brandonkelly]

We primarily extend the base class to hook template rendering into Yii profiling for the Debug toolbar. There’s no good alternative way to do that currently, as far as I can tell.

Posted twigphp/Twig#3129 asking for a new way to hook into template rendering, so we’ll see what they come back with.

[brandonkelly]

This has been fixed for Craft 3.3!

[nikolowry]

@brandonkelly we use suppressTemplateErrors in production environments -- what's the recommended approach now that suppressTemplateErrors is deprecated?