(crashreport) something seems to trigger Phalcon\Mvc\View->render() before initialize() was called, not sure what it is, probably something changed in phalcon to trigger this in some cases.

exception 'Exception' with message 'The argument is not initialized or iterable()' in phalcon/mvc/view.zep:694
Stack trace:
 0 [internal function]: Phalcon\Mvc\View->_engineRender(Array, 'settings/listRu...', true, true, NULL)
 1 [internal function]: Phalcon\Mvc\View->render('settings', 'listRulesets', Array)
 2 /usr/local/opnsense/www/api.php(26): Phalcon\Mvc\Application->handle()

src/opnsense/mvc/app/config/services_api.php

@@ -44,6 +44,7 @@ $di = new FactoryDefault();
 $di->set('view', function () use ($config) {
     // return a empty view
     $view = new View();
+    $view->disable();
     return $view;
 });
 

src/opnsense/mvc/app/controllers/OPNsense/Base/ApiControllerBase.php

@@ -90,7 +90,6 @@ class ApiControllerBase extends ControllerRoot
     public function initialize()
     {
         // disable view processing
-        $this->view->disable();
         set_error_handler(array($this, 'APIErrorHandler'));
     }