Return error

src/Stepper.php

@@ -53,10 +53,10 @@ class Stepper
 
     public function onSubmit()
     {
-        $client = new Client();
+        $client = new Client(['http_errors' => false]);
 
         $payload = json_decode(file_get_contents('php://input'), true);
-        $client->post($this->baseUrl . '/api/lead', [
+        $response = $client->post($this->baseUrl . '/api/lead', [
             'json' => $payload,
             'headers' => [
                 'Accept' => 'application/json',
@@ -64,6 +64,19 @@ class Stepper
                 'Authorization' => 'Bearer ' . $this->token(),
             ]
         ]);
+
+        if ($response->getStatusCode() === 401) {
+            $this->error('Anmeldung fehlgeschlagen.');
+        }
+
+        if ($response->getStatusCode() === 500) {
+            $this->error('Ein Fehler ist aufgetreten.');
+        }
+    }
+
+    private function error(string $error): void
+    {
+        wp_send_json(['message' => '', 'errors' => ['error' => [$error]]], 422);
     }
 
     protected function token(): string