Upgrade to Laravel 10

app/Http/Middleware/CSPHeader.php

@@ -5,16 +5,14 @@ namespace App\Http\Middleware;
 use Closure;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\App;
+use Symfony\Component\HttpFoundation\Response;
 
 class CSPHeader
 {
     /**
      * Handle an incoming request.
-     *
-     * @param  Request  $request
-     * @return mixed
      */
-    public function handle($request, Closure $next)
+    public function handle(Request $request, Closure $next): Response
     {
         if (App::environment('local', 'development')) {
             return $next($request);