Please follow the below steps for this issue.
Go to Google chrome search
Download the Zip file
Right click on the downloaded file and extract the files.
Now open the Extracted folder (dl/rc)
Select all folders using CTRL+ A and copy all the folders
In the content drive click on “ERAImpFiles” click on “dl” folder click on “rc” folder, now paste copied folder.
Click on the Replace the files in the destination option.
After replacing the reference material do the learner login and check issue will get solved.
If issue persist, kindly raise the ticket with below details.
Screenshot of the issue
Detail Description (with session number)