PHP message: PHP Fatal error: Declaration of Drupal\Core\Logger\LoggerChannel::log($level, Stringable|string $message, array $context = []): void must be compatible with PsrExt\Log\LoggerTrait::log($level, $message, array $context = [])

Welcome to the Drupal Community! There are some things you should know:

• Drupal 10.1.x is a development release. If you are brand-new to Drupal, you should use a supported release. But if you want to test the development release of Drupal, please do!
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That said, I can't reproduce this as written. It works for me. You could have there an old version of Composer.

I get a similar error if I try to use this code in PHP 8.1 and Drupal 10:

namespace Drupal\my_module\Logger;

use Drupal\Core\Logger\RfcLoggerTrait;
use Psr\Log\LoggerInterface;

/**
 * The logger which intercepts system messages.
 */
class MyModuleLogger implements LoggerInterface {

  use RfcLoggerTrait;

  /**
   * {@inheritdoc}
   */
  public function log($level, $message, array $context = []) {
    ...
  }

}

The above works fine in Drupal 9, but causes Fatal error: Declaration of Drupal\my_module\Logger\MyModuleLogger::log($level, string $message, array $context = []) must be compatible with Drupal\Core\Logger\RfcLoggerTrait::log($level, Stringable|string $message, array $context = []): void in Drupal 10.

If I change my code to be compatible, then when try the same code in Drupal 9 it no longer works.

This seems to works. Not sure it passes the smell test though...

namespace Drupal\my_module\Logger;

use Drupal\Core\Logger\RfcLoggerTrait;
use Psr\Log\LoggerInterface;

/**
 * The logger which intercepts system messages.
 */
abstract class MyModuleLoggerCommon implements LoggerInterface {

  use RfcLoggerTrait;

  public function logCommon($level, $message, array $context = []) {
    ...
  }

}

if (version_compare(\Drupal::VERSION, '10', '>=')) {
  class MyModuleLogger extends MyModuleLoggerCommon {

    /**
     * {@inheritdoc}
     */
    public function log($level, string|\Stringable $message, array $context = []): void {
      $this->logCommon($level, $message, $context);
    }

  }
}
else {
  class MyModuleLogger extends MyModuleLoggerCommon {

    /**
     * {@inheritdoc}
     */

    public function log($level, $message, array $context = []) {
      $this->logCommon($level, $message, $context);
    }
  };
}

I also had the "PHP Fatal error: Declaration of Drupal\Core\Logger\LoggerChannel..." issue while composer installing Drupal 10.0.9 and Drupal 10.1.0 under Debian 11.7 & PHP 8.1.

The solution was to disable php-psr extension which had been active in my case.

Hope it helps!

My own operating environment is using CentOS 7 with PHP 8.1 and httpd (apache). I did not have a module installed for php-psr so I'm still stuck. Here's my related forum post.

https://www.drupal.org/forum/support/upgrading-drupal/2023-10-24/upgrade... →

On the forum post, you'll find my composer.json file's contents.

How are you invoking Drush?

@cilefen I'm calling drush from the project's top-level directory. vendor/bin/drush -l foldername cr The issue is not drush itself, but the fact that the logger keeps throwing a PHP fatal error that prevents anything else from happening.

I was able to resolve the issue by making a small and direct change to the LoggerChannel.php file in core. Attached is the patch generated. The change simply updated the calls to match PSR.

Are you using the drupal/core-recommended Composer package? You are experiencing unusual things.

Yes, drupal/core-recommended is part of the project. Here is the composer show drupal/core-recommended output.

name     : drupal/core-recommended
descrip. : Core and its dependencies with known-compatible minor versions. Require this project INSTEAD OF drupal/core.
keywords :
versions : * 10.1.5
type     : metapackage
license  : GNU General Public License v2.0 or later (GPL-2.0-or-later) (OSI approved) https://spdx.org/licenses/GPL-2.0-or-later.html#licenseText
homepage :
source   : [git] https://github.com/drupal/core-recommended.git 2c5cf420ddb06f3e9b624d168b724ca1c7c326e2
dist     : [zip] https://api.github.com/repos/drupal/core-recommended/zipball/2c5cf420ddb06f3e9b624d168b724ca1c7c326e2 2c5cf420ddb06f3e9b624d168b724ca1c7c326e2
path     : null
names    : drupal/core-recommended

support
source : https://github.com/drupal/core-recommended/tree/10.1.5

requires
asm89/stack-cors ~v2.1.1
composer/semver ~3.3.2
doctrine/annotations ~1.14.3
doctrine/deprecations ~v1.1.1
doctrine/lexer ~2.1.0
drupal/core 10.1.5
egulias/email-validator ~4.0.1
guzzlehttp/guzzle ~7.7.0
guzzlehttp/psr7 ~2.5.0
masterminds/html5 ~2.8.0
mck89/peast ~v1.15.4
pear/archive_tar ~1.4.14
pear/console_getopt ~v1.4.3
pear/pear-core-minimal ~v1.10.13
pear/pear_exception ~v1.0.2
psr/cache ~3.0.0
psr/container ~2.0.2
psr/event-dispatcher ~1.0.0
psr/http-client ~1.0.2
psr/http-factory ~1.0.2
psr/log ~3.0.0
ralouphie/getallheaders ~3.0.3
sebastian/diff ~4.0.5
symfony/console ~v6.3.0
symfony/dependency-injection ~v6.3.0
symfony/deprecation-contracts ~v3.3.0
symfony/error-handler ~v6.3.0
symfony/event-dispatcher ~v6.3.0
symfony/event-dispatcher-contracts ~v3.3.0
symfony/http-foundation ~v6.3.0
symfony/http-kernel ~v6.3.0
symfony/mime ~v6.3.0
symfony/polyfill-ctype ~v1.27.0
symfony/polyfill-iconv ~v1.27.0
symfony/polyfill-intl-grapheme ~v1.27.0
symfony/polyfill-intl-idn ~v1.27.0
symfony/polyfill-intl-normalizer ~v1.27.0
symfony/polyfill-mbstring ~v1.27.0
symfony/polyfill-php83 ~v1.27.0
symfony/process ~v6.3.0
symfony/psr-http-message-bridge ~v2.2.0
symfony/routing ~v6.3.0
symfony/serializer ~v6.3.0
symfony/service-contracts ~v3.3.0
symfony/string ~v6.3.0
symfony/translation-contracts ~v3.3.0
symfony/validator ~v6.3.0
symfony/var-dumper ~v6.3.0
symfony/var-exporter ~v6.3.0
symfony/yaml ~v6.3.0
twig/twig ~v3.6.0

conflicts
webflo/drupal-core-strict *

This has appeared in other forms https://drupal.stackexchange.com/questions/314072/drush-fatal-error-with.... In some cases it was that Drupal Core or other dependencies were installed twice.

And another: https://www.drupal.org/project/backup_migrate/issues/3304922 →

psr/log 3.0.0 changed the interface of LoggerInterface::log() to include types: https://github.com/php-fig/log/blob/3.0.0/src/LoggerInterface.php#L124

Your patch in #12 implies you have an earlier version of psr/log installed that does not have the types set.

Unfortunately, that is not the case. Please see the included composer show psr/log output.

name     : psr/log
descrip. : Common interface for logging libraries
keywords : log, psr, psr-3
versions : * 3.0.0
type     : library
license  : MIT License (MIT) (OSI approved) https://spdx.org/licenses/MIT.html#licenseText
homepage : https://github.com/php-fig/log
source   : [git] https://github.com/php-fig/log.git fe5ea303b0887d5caefd3d431c3e61ad47037001
dist     : [zip] https://api.github.com/repos/php-fig/log/zipball/fe5ea303b0887d5caefd3d431c3e61ad47037001 fe5ea303b0887d5caefd3d431c3e61ad47037001
path     : /var/www/html/magnolia/vendor/psr/log
names    : psr/log

support
source : https://github.com/php-fig/log/tree/3.0.0

autoload
psr-4
Psr\Log\ => src

requires
php >=8.0.0

But you said in #12 "The change simply updated the calls to match PSR." - where did you get the PSR code from? I still suspect that somewhere you have an older version of psr/log that is being found first.

Did you read https://drupal.stackexchange.com/questions/314072/drush-fatal-error-with... ?

Longwave - Your comments did remind me that I've got a few globally installed packages via composer global require. I'm going through my configuration now to be sure I don't have another version of PSR Log installed.

cilefen - Yes, I read it.

Global packages shouldn't be an issue, as I was able to update all sites that I manage but this one site to D10 from D9. After removing all the global packages and being sure that no ~/.config/composer folder is left behind to potentially confuse the server.

I was able to resolve my issue without the codebase patch in the end. I had to reinstall a couple of packages.

composer reinstall symfony/psr-http-message-bridge psr/log

Once the packages were reinstalled, I was able to complete the original task.

Thank you for reporting the solution that worked for you, this may help others in the future.

For the record. I got this error today in CI. I upgraded PHP from 8.1 to 8.2 in CI and the error is gone now ✅

If you use GitHub Actions, the CI error was likely due to https://github.com/shivammathur/setup-php/issues/799 which was fixed within a few hours.

I realise from that issue that people encountering this might have the psr PHP extension installed, which apparently isn't compatible with psr/log 3.

We are getting this error currently on core 10.2 with either php 8.1 or 8.2 running. The php extension psr is not installed.

Ubuntu 22 with php8.2 here, confirmed that after removing php-psr extension, this error is fixed.

If you disable php-psr by removing 15-psr.ini file, the error is still there, this extension has to be removed.

Still I am getting this error:
Drupal Version
10.2.1
PHP Fatal error: Declaration of Consolidation\Log\Logger::log($level, Stringable|string $message, array $context = []): void must be compatible with Psr\Log\LoggerInterface::log($level, $message, array $context = []) in vendor/consolidation/log/src/Logger.php on line 146

Using psr/log 3.0, I also had to install php-psr, apt install php-psr php8.1-psr php8.2-psr on my machine. It seemed to work.