update

application/admin/controller/System.php

@@ -93,7 +93,7 @@ class System extends Base
       
         $src=ROOT_PATH.'public/entranceJs/jstmpl.js';
         $tar=ROOT_PATH.'public/entranceJs/FloatingButton.js';
-        if(is_readable($src)){
+        if(is_writable($tar) && is_readable($src)){
             $content=file_get_contents($src);
             $content=str_replace('{VISITOR_DOMAIN}',$settings['visitor_url'],$content);
             $content=str_replace('{CUSTOMER_DOMAIN}',$settings['customer_url'],$content);