"Declaration of Combodo\iTop\Cas\CASLogger::emergency($message, array $context = []) must be compatible with Psr\Log\LoggerInterface::emergency(Stringable|string $message, array $context = [])"
psr/log 3.0.0 brings the BC break
Switching to 2.0.0 is nice as it will bring improvements for PHP 8.0+ !
So adding psr/log ^2.0.0 to composer.json