Enable error logging from settings.php

I am facing a The website encountered an unexpected error. error while setting up the site.

Most of the documentation I found online suggest to enable logging in the setting.php file.

I added this line in site/default/settings.php.

$config['system.logging']['error_level'] = 'verbose';

I added the following code.

error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);

I added the following lines to the same settings.php file, at the bottom.

if (file_exists(__DIR__ . '/settings.local.php')) {
  include __DIR__ . '/settings.local.php';
}

I copied the sites/example.sites.php file to sites/default/ and renamed it settings.local.php, as suggested on https://catwolf.org/qs?id=180d30e9-9dcb-4e96-b030-7df34c77f5ab&x=x and https://www.drupal.org/forum/support/post-installation/2018-07-18/enable-drupal-8-backend-errorlogdebugging-mode.

I restarted Apache and reloaded the site, but I see the same error shows again without any log.

I am migrating a Drupal 7.84 site from CentOS 6.10 to CentOS 7.9. The httpd passes from version 2.2.15 to version 2.4.6; it also has PHP 7.03 and MariaDB 10.3.

Did I miss anything, or do I have to do anything else to enable the logging?

Please try the following:

• in the webroot, rename .htaccess to .htaccess.old -- Apache 2.4 has changed syntax in some directives that may be causing the error before PHP is even reached. Also check apache log files ( usually /var/log/httpd/error.log, see your VirtualHost for other paths )
• check your PHP file logs, since some errors never make it to the screen even with all the above listed directives -- on CentOS these are normally under /var/log/php*

One of the above should have a log entry on what went wrong.

Here's the official manual for Drupal 7: https://www.drupal.org/docs/7/creating-custom-modules/show-all-errors-while-developing

At the end of your sites/default/settings.php, add the following lines:

error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('display_startup_errors', TRUE);
$conf['error_level'] = 2;

Please pay extra attention to the last line, as it is specific to D7. Your code was for D8/D9.

Of course those changes can be also made to settings.local.php, but I would try to do it after making sure that $conf['error_level'] = 2; works at all at the end of settings.php.