您可以创建一个自定义的ErrorListener，它负责HTTP错误日志记录并覆盖默认的ErrorListener。在下面的代码中，dev环境由包含APP_DEBUG env变量的$this->debug属性确定。

namespace App\EventListener;

use Symfony\Component\HttpKernel\EventListener\ErrorListener as BaseErrorListener;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;

class ErrorListener extends BaseErrorListener
{
    protected function logException(\Throwable $exception, string $message, string $logLevel = null): void
    {
        if (null !== $this->logger) {
            if (null !== $logLevel) {
                $this->logger->log($logLevel, $message, ['exception' => $exception]);
            } elseif (!$exception instanceof HttpExceptionInterface || $exception->getStatusCode() >= 500) {
                $this->logger->critical($message, ['exception' => $exception]);
            } else {
                // beginning of changes
                if ($exception->getStatusCode() !== 404 || !$this->debug) {
                    $this->logger->error($message, ['exception' => $exception]);
                }
                // ending of changes
            }
        }
    }
}

并注册此侦听器

namespace App\DependencyInjection\Compiler;

use App\EventListener\ErrorListener;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Reference;

class ErrorListenerPass implements CompilerPassInterface
{
    public function process(ContainerBuilder $container): void
    {
        // override `exception_listener`
        $exceptionListenerDefinition = $container->getDefinition('exception_listener');
        $exceptionListenerDefinition->setClass(ErrorListener::class);
    }
}