修改部分类注释

library/traits/think/Instance.php

@@ -11,6 +11,8 @@
 
 namespace traits\think;
 
+use \think\Exception;
+
 trait Instance
 {
     protected static $instance = null;
@@ -37,7 +39,7 @@ trait Instance
         if (0 === strpos($method, '_') && is_callable([self::$instance, $call])) {
             return call_user_func_array([self::$instance, $call], $params);
         } else {
-            throw new \think\Exception("not exists method:" . $method);
+            throw new Exception("not exists method:" . $method);
         }
     }
 }