Added middleware that mitigates big error traces being logged for those not using mercure

module/Rest/config/dependencies.config.php

@@ -6,7 +6,9 @@ namespace Shlinkio\Shlink\Rest;
 
 use Laminas\ServiceManager\AbstractFactory\ConfigAbstractFactory;
 use Laminas\ServiceManager\Factory\InvokableFactory;
+use Mezzio\ProblemDetails\ProblemDetailsResponseFactory;
 use Mezzio\Router\Middleware\ImplicitOptionsMiddleware;
+use Psr\Log\LoggerInterface;
 use Shlinkio\Shlink\Common\Mercure\LcobucciJwtProvider;
 use Shlinkio\Shlink\Core\Domain\DomainService;
 use Shlinkio\Shlink\Core\Options;
@@ -49,6 +51,7 @@ return [
             Middleware\ShortUrl\DropDefaultDomainFromRequestMiddleware::class => ConfigAbstractFactory::class,
             Middleware\ShortUrl\DefaultShortCodesLengthMiddleware::class => ConfigAbstractFactory::class,
             Middleware\ShortUrl\OverrideDomainMiddleware::class => ConfigAbstractFactory::class,
+            Middleware\Mercure\NotConfiguredMercureErrorHandler::class => ConfigAbstractFactory::class,
         ],
     ],
 
@@ -90,6 +93,10 @@ return [
             'config.url_shortener.default_short_codes_length',
         ],
         Middleware\ShortUrl\OverrideDomainMiddleware::class => [DomainService::class],
+        Middleware\Mercure\NotConfiguredMercureErrorHandler::class => [
+            ProblemDetailsResponseFactory::class,
+            LoggerInterface::class,
+        ],
     ],
 
 ];