ExceptionListener.php

<?php

namespace App;

use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
use Psr\Log\LoggerInterface;

class ExceptionListener {

    /**
     * @var mixed
     */
    private $logger;
    /**
     * @param LoggerInterface $logger
     */
    public function __construct(LoggerInterface $logger) {
        $this->logger = $logger;
    }
    /**
     * @param GetResponseForExceptionEvent $event
     */
    public function onKernelException(GetResponseForExceptionEvent $event) {
        // You get the exception object from the received event
        $exception = $event->getException();
        $message = sprintf(
            'My Error says: %s with code: %s',
            $exception->getMessage(),
            $exception->getCode()
        );

        // Customize your response object to display the exception details
        $response = new Response();
        $response->setContent($message);

        // HttpExceptionInterface is a special type of exception that
        // holds status code and header details
        if ($exception instanceof HttpExceptionInterface) {
            $response->setStatusCode(Response::HTTP_OK);
            // $response->setStatusCode($exception->getStatusCode());
            $response->headers->replace($exception->getHeaders());
        } else {
            $response->setStatusCode(Response::HTTP_OK);
        }
        $response->headers->set('X-Status-Code', 200);

        $this->logger->error($message, [$response]);

        // sends the modified response object to the event
        $event->setResponse($response);
    }
}

services.yaml

servies:
 
    App\ExceptionListener:
        tags:
            - { name: kernel.event_listener, event: kernel.exception }