Symptom
I am trying to access a folder with documents but when I click the folder I see a message stating "This folder does not contain any documents"
Cause
The folder does not contain any documents. However, the folder may contain subfolders that may contain documents.
Solution
Expand the folder (in the screenshot above, click the arrow to the left of the Accounts Payable folder. The folder contains subfolders, which contain the documents you are looking for.