A customer of mine is restricted to use no other browser than Internet Explorer to access the Solr Administration User Interface.
He reported that the website does not display any content in the main area when any button of the menu on the left hand side is clicked.
I can replicate that behavior on my machine.
When the Admin UI is loaded, the menu on the left hand side is visible but no content is ever displayed in the main area.
Any menu item (e.g. "Dashboard", "logging", "Java Properties" etc.) can be clicked but no content appears.
I can confirm, that some month ago the Admin UI worked well under IE.
However, I have not researched with what update of IE the problems exactly started.
The displayed stacktrace indicates that Internet Explorer does not support the method "startsWith" (and subsequently, the same is true for the method "includes").
This behavior is documented: