如果string.match()不匹配，为什么要取消执行Google Apps脚本?

如果我在Google表格中使用以下功能，则不会返回未找到"值. 日志告诉我:执行已取消".

if I use the following function within Google Sheets it doesn't return the value "not found". The logs tell me: "Execution cancelled".

这发生在以下行:

var found = text.match(re);

如果我将searchText更改为"abc"，则它就像一个超级按钮.

If I change searchText to "abc" it works like a charme.

function example()
{
  var text = "abc cba";
  var searchText = "abcd";

  var re = new RegExp(searchText,"g");

  var found = text.match(re);

  if (found === undefined) { 
    return "not found";
  }
  else {
    return found;
  }
} 

为什么脚本执行被取消，并且如何通过不使用regex两次来防止这种行为，例如在 match()之前的 text.search(re)与if 组合?

Why is the script execution cancelled and how can I prevent this behavior without using the regex twice by using e.g. text.search(re) combined with if before the match() ?