lib/doorkeeper/oauth/client_credentials/creator.rb in doorkeeper-5.6.1 vs lib/doorkeeper/oauth/client_credentials/creator.rb in doorkeeper-5.6.2

@@ -11,10 +11,10 @@
             existing_token = find_active_existing_token_for(client, scopes)
             return existing_token if server_config.reuse_access_token && existing_token&.reusable?
           end
 
           with_revocation(existing_token: existing_token) do
-            application = client.is_a?(Doorkeeper::Application) ? client : client.application if client
+            application = client.is_a?(server_config.application_model) ? client : client&.application
             server_config.access_token_model.create_for(
               application: application,
               resource_owner: nil,
               scopes: scopes,
               **attributes,