织梦dedecms商业教程 织梦错误：Call to a member function GetInnerText() on a non-objec

出现了Fatal error: Call to a member function GetInnerText() on a non-object in /htdocs/include/customfields.func.php on line 539错误

网上有很多解决方案都不对，现织梦二次开发网给出如下解决方案

将include/customfields.func.php 文件的539行

$fvalue = trim($ntag->GetInnerText());

替换为

$fvalue = ($ntag=="") ? trim($ntag) : trim($ntag->GetInnerText());