Error when editing content query web part

Question

I'm working on SharePoint Online.

I want to edit a CQWP, but I get an error from Microsoft SharePoint Foundation:

Troubleshooting of Microsoft SharePoint Foundation. Correlation identifier: 5a4a6f9d-20cd-3000-9f42-29e549e6ddfe

This is at Site Collection level, since the problem occurs anywhere in my collection.

Answer 1

打开服务器上的日志并搜索您的相关ID：这将为您（大部分）提供更清晰的错误消息。将它粘贴在这里然后我们可以尝试帮助你，因为现在我们就像一个试图找到一根棍子的盲人：）

提示：此工具可以改进日志的过滤：https://sharepointlogviewer.codeplex.com/