refactor: extract exception and cache middleware (#4248)

middlewares/ExceptionMiddleware.php

@@ -0,0 +1,24 @@
+<?php
+
+declare(strict_types=1);
+
+class ExceptionMiddleware implements Middleware
+{
+    private Logger $logger;
+
+    public function __construct(Logger $logger)
+    {
+        $this->logger = $logger;
+    }
+
+    public function __invoke(Request $request, $next): Response
+    {
+        try {
+            return $next($request);
+        } catch (\Throwable $e) {
+            $this->logger->error('Exception in ExceptionMiddleware', ['e' => $e]);
+
+            return new Response(render(__DIR__ . '/../templates/exception.html.php', ['e' => $e]), 500);
+        }
+    }
+}