My company has a SharePoint 2019 on premise environment. Our farm administrator left our company recently and I have been asked to take over administration of our SharePoint environment. The first thing I need to do is add myself to the Farm Administrators group. I can launch Central Administration and get to the People and Groups : Farm Administrators page, but when I click the "New" link to add a user, I get error "Sorry, something went wrong. File Not Found."
I have access to the diagnostic logs, but I am not able to find the source of the "File Not Found" error. Can somebody point me in the right direction?
Thanks in advance!