Exporting ClientSidePage with thumbnail image within Guid in the name fails

[magarma]

Hi,
We've found a case when we have a client side page with a Guid being part of the thumbnail url and it's failing during the export template.

This would raise an exception in the line 172.

The page has as thumbnail the image URL
https://xxxxxxxx.sharepoint.com/sites/WhateverTest/Library/761982578-pexels-stanislav-kondratiev-5379088_01D8B295-5963-47F3-B1F8-946AF2A635782021-08-12T10-16-06.jpg

As you can notice when the code is try to find a Guid pattern with Regex, is matching, but of course is not a valid file Id to be got with web.GetFileById

[magarma]

This will happen every time there is a thumbnail image added to a page from the O365 stock images.

[jansenbe]

Closing as the fix was merged