WHMCS编辑产品出错 Oops! Something went wrong and we couldn’t process your request.Please go back to the previous page and try again.Apache错误日志也没记录具体错误原因。
解决方法：在WHMCS后台的General Settings>>Other下勾选：Display Errors和Log Errors：

点击Save Changes保存，刷新下即可看到具体错误提示，我们遇到的是这样的：

exception ‘Whoops\Exception\ErrorException’ with message ‘Cannot redeclare _createCustomer() (previously declared in /home/XXXX/public_html/XXXX.com/modules/servers/resellerclubmdhostingin/resellerclubmdhostingin.php:483)’ in /home/XXXX/public_html/XXXX.com/servers/resellerclubvpsus/resellerclubvpsus.php:486
Stack trace:
#0/home/XXXX/public_html/XXXX.com/vendor/whmcs/whmcs-foundation/lib/Utility/Error/Run.php(0): WHMCS\Utility\Error\Run->handleError(64, ‘Cannot redeclar…’, ‘/home/XXXX/p…’, 486)
#1 [internal function]: WHMCS\Utility\Error\Run->handleShutdown()
#2 {main}

resellerclubvpsus这个模块我们需要，直接注释掉后即可正常编辑产品了。