Re: What is CServerDocumentEntry and Why is It Erroring?
It looks like this is fixed in September 2017 release. See release note below:
When app is deleted while open on a rim node, an error is placed in the log file
Jira issue ID: QLIK-77860
Description: If an app gets deleted while it is open on a rim node, the “CServerdocumentEntry: could not fetch modified time for [xxx]. Skipping newest check” is added to the log file. This is not an error, and recording the error message in this case is misleading.