edit

main/src/Preview.php

@@ -23,6 +23,10 @@ class Preview
 
         $info = Dever::db($table)->one($id);
 
+        if (!$info) {
+            return '暂无数据';
+        }
+
     	$table = array();
 
         $path = Dever::config('base')->applet_index;