我的频道可清空

app/Http/Controllers/Api/UserChannelController.php

@@ -19,9 +19,8 @@ class UserChannelController extends Controller
     {
 		$formData = $request->only(['channels']);
 		$request->validate([
-			'channels' => 'required|array',
+			'channels' => 'nullable|array',
 		], [
-			'channels.required' => '未选择任何频道',
 			'channels.array' => 'channels必须是数组',
 		]);