Update VkProvider.php

src/VkProvider.php

@@ -144,10 +144,12 @@ class VkProvider extends AbstractProvider
 
         return $url;
     }
-    protected function getDefaultScopes()
+    
+    protected function getDefaultScopes(): array
     {
         return $this->scopes;
     }
+
     protected function checkResponse(ResponseInterface $response, $data): void
     {
         // Metadata info

src/VkUser.php

@@ -35,7 +35,7 @@ class VkUser implements ResourceOwnerInterface
     /**
      * Helper for getting user data
      */
-    protected function getField(string $key): mixed|null
+    protected function getField(string $key): mixed
     {
         return !empty($this->response[$key]) ? $this->response[$key] : null;
     }