Fix request stack

Closes #3503433

src/ShipStation.php

@@ -129,7 +129,7 @@ class ShipStation {
     $this->systemDateConfig = $config_factory->get('system.date');
     $this->entityTypeManager = $entity_type_manager;
     $this->eventDispatcher = $event_dispatcher;
-    $this->request = $request_stack->getCurrentRequest();
+    $this->request = $request_stack;
     $this->messenger = $messenger;
     $this->logger = $logger;
     $this->moduleHandler = $module_handler;
@@ -146,13 +146,14 @@ class ShipStation {
     $auth_key = $this->shipStationConfig->get('commerce_shipstation_alternate_auth');
     $username = $this->shipStationConfig->get('commerce_shipstation_username');
     $password = $this->shipStationConfig->get('commerce_shipstation_password');
+    $current_request = $this->request->getCurrentRequest();
 
-    if ($this->request->query->get('SS-UserName') === $username && $this->request->query->get('SS-Password') === $password) {
+    if ($current_request->query->get('SS-UserName') === $username && $current_request->query->get('SS-Password') === $password) {
       return AccessResult::allowed();
     }
 
     // Allow ShipStation to authenticate using an auth token.
-    $request_auth_key = $this->request->query->get('auth_key');
+    $request_auth_key = $current_request->query->get('auth_key');
     if ($auth_key && $request_auth_key && $auth_key === $request_auth_key) {
       return AccessResult::allowed();
     }