PHP Fatal Error Monolog/PSR Version Incompatibility

[laflier]

Description

PHP Fatal error: Declaration of Monolog\Logger::emergency(Stringable|string $message, array $context = []): void must be compatible with Psr\Log\LoggerInterface::emergency($message, array $context = []) in /Users/len/Sites/dev.bookdiscovery.mamp/wp-content/composer/vendor/monolog/monolog/src/Monolog/Logger.php on line 681

Steps to reproduce

Install typesense-php with composer
use Typesense/Client
$client = new Client()

Expected Behavior

No errors

Actual Behavior

Fatal error

Metadata

**PHP Version: 8.1

Typesense Version: 26

OS: Ubuntu 24.01

[laflier]

The problem turned out to be related to the versions of monolog and psr installed by composer. Apparently there is an issue with monolog 3+. These threads were helpful in diagnosing:

composer/composer#11246
https://stackoverflow.com/questions/75696889/fatal-error-declaration-of-monolog-loggeremergencystringablestring-message

The solution was to downgrade monolog and psr. I accomplished this by adding the following lines to the composer.json file in the project root:

"monolog/monolog": "^2.5",
"psr/log": "^2.0"

I then updated monolog and psr with the following composer command (composer required simultaneous update of monolog and psr for this operation):

composer update monolog/monolog psr/log

This operation successfully downgraded monolog from version 3.6.0 to version 2.9.3 and psr from version 3.0.0 to version 2.0.0. The TypeSense PHP client is now working.