nicer package layout, also in checkout step 1, fixed missing registration language strings, registration error handling, email verification redirect, email verification error handling and messaging,

app/Http/Middleware/ValidateSignature.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Routing\Exceptions\InvalidSignatureException;
+use Illuminate\Routing\Middleware\ValidateSignature as BaseValidateSignature;
+
+class ValidateSignature extends BaseValidateSignature
+{
+    public function handle($request, Closure $next, ...$args)
+    {
+        try {
+            return parent::handle($request, $next, ...$args);
+        } catch (InvalidSignatureException $exception) {
+            if ($request->expectsJson()) {
+                throw $exception;
+            }
+
+            if ($request->routeIs('verification.verify')) {
+                $request->session()->flash('verification', [
+                    'status' => 'error',
+                    'title' => __('auth.verification.expired_title'),
+                    'message' => __('auth.verification.expired_message'),
+                ]);
+
+                return redirect()->route('verification.notice');
+            }
+
+            throw $exception;
+        }
+    }
+}