This wired error “Cannot complete this action” usually appears whenever users delete a document from a file or modify a list view in their team sites.
Seen lots of forums and blogs and did some analysis and found something to share about this error i.e.:
With the help of some good blogs and sites like; kloud, technet and Microsoft able find a solution. This was due to the fact that there was a load balanzer running which hasn’t had HTTP compression enabled plus these sub-sites having Minimal Download Strategy (MDS) site feature enabled.
For more information: https://docs.microsoft.com/en-us/sharepoint/dev/general-development/minimal-download-strategy-overview
Minimal Download Strategy feature was supposed to optimize loading speed for users as it allows the browser to only retrieve the changes required for a web page, rather than the whole page. However, when you have a load balanzer running for SharePoint, HTTP compression will need to be enabled in order for MDS to work properly. Otherwise, simply turn off the site feature and this error will disappear.