"Sorry, something went wrong" when you change the "Summary Links" Web Part in SharePoint Online
Consider the following scenario:
You have a Microsoft SharePoint Online site collection that has the SharePoint Server Publishing Infrastructure option enabled.
The site collection includes a subsite that contains a Summary Links Web Part.
You save the subsite as a template by using the Save site as template functionality.
You use the saved template to create another subsite in the site collection.
You browse to the new site and then try to create a new link, edit an existing link, or change the contents or settings in the Summary Links Web Part.
In this scenario, you receive the following error message:
Sorry, something went wrong List does not exist. The page you selected contains a list that does not exist. It may have been deleted by another user.
To work around this issue, delete and then re-create the Web Part on the page. After you have done this, populate the required links.
This issue occurs because SharePoint doesn't support Save Site as Template functionality when the SharePoint Server Publishing Infrastructure option is enabled.
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