打开单页栏目，页面能显示，但是会有一个小提示与对话框弹出：

对话框：{ "title": "CodeIgniter\\Exceptions\\PageNotFoundException", "type": "CodeIgniter\\Exceptions\\PageNotFoundException", "code": 404, "message": "Controller or its method is not found: {0}::{1}", "file": "/var/www/zekun/public/dayrui/System/CodeIgniter.php", "line": 1003, "trace": [ { "file": "/var/www/zekun/public/dayrui/System/CodeIgniter.php", "line": 1003, "function": "forPageNotFound", "class": "CodeIgniter\\Exceptions\\PageNotFoundException", "type": "::" }, { "file": "/var/www/zekun/public/dayrui/System/CodeIgniter.php", "line": 349, "function": "display404errors", "class": "CodeIgniter\\CodeIgniter", "type": "->" }, { "file": "/var/www/zekun/public/dayrui/Fcms/Init.php", "line": 398, "function": "run", "class": "CodeIgniter\\CodeIgniter", "type": "->" }, { "file": "/var/www/zekun/public/index.php", "line": 44, "args": [ "/var/www/zekun/public/dayrui/Fcms/Init.php" ], "function": "require" } ] }

toast：模块目录[]不存在

这个如何排查？没有动过系统代码，只是改了模板。

在后台修改栏目的时候，发现模板设置那里是空的，按说新建栏目为单页的话，这里应该是page.html，但是我填上page.html也不行，还是上面的报错：