Fix

appinfo/application.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace OCA\Deckflow\AppInfo;
+
+use OCP\AppFramework\App;
+use OCA\Deckflow\Controller\SettingsController;
+
+class Application extends App {
+    public function __construct() {
+        parent::__construct('deckflow');
+    }
+
+    public function register() {
+        $this->getContainer()->registerService('SettingsController', function($c) {
+            return new SettingsController(
+                $c->query('OCP\IRequest'),
+                $c->query('OCP\IUserSession'),
+                $c->query('OCA\Deckflow\Service\WorkflowService')
+            );
+        });
+    }
+}