MAINTENANCE: update laravel, dependencies, fix few bugs

app/Http/Controllers/Admin/Contents/ContentOverview.php

@@ -33,7 +33,7 @@ class ContentOverview extends Controller
      * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
      * @internal param int|null $moduleId
      */
-    public function index(Module $module = null, $status = null)
+    public function index(Module $module, $status = null)
     {
         // get module settings
         $pageHeading = $this->module->getOverviewTitle($module);

app/Http/Controllers/Admin/Templates/EditTemplate.php

@@ -98,7 +98,7 @@ class EditTemplate extends Controller
         // try to save content
         if (!is_writable($customDir) && !is_writable($originalDir)) {
             return redirect()
-                ->route('templates.edit', ['id' => $request->id])
+                ->route('templates.edit', ['id' => $template->id])
                 ->withInput()
                 ->with('warning', trans('admin/templates.cannotWriteContent'));
         }