Update Servyy.php

Author: jamsouf

Servyy.php

@@ -117,7 +117,7 @@ private function getCommand($type, $data = null)
             case 'perl': $command = 'perl -v'; break;
             case 'python': $command = 'python --version'; break;
             case 'ruby': $command = 'ruby --version'; break;
-            case 'ls': $command = 'ls -'.($data['showHiddenFiles']=='true'?'a':'').'FlQ --time-style long-iso --group-directories-first '.$data['file']; break;
+            case 'ls': $command = 'ls -'.(($data['showHiddenFiles']??null)=='true'?'a':'').'FlQ --time-style long-iso --group-directories-first '.($data['file']??null); break;
             case 'cat': $command = 'cat '.$data['file']; break;
         }
 
@@ -1009,4 +1009,4 @@ public function rcp($value)
         <script src="//jamsouf.github.io/servyy/assets/js/highlight.pack.js"></script>
         <script src="//jamsouf.github.io/servyy/assets/js/main.js"></script>
     </body>
-</html>
+</html>