I submitted this as error 1452414533.

I tried to import a ris file and got an XML parsing error. The text under the "File Handling" portion of the import interface was also blank—see this screenshot:
https://www.dropbox.com/s/5cn9jkmbpwekh5e/Screenshot 2020-10-22 211618.png?dl=0

I had imported the same file to a different user profile a few hours earlier with no problems, so there should be nothing wrong with the file itself. Here is the file:
https://www.dropbox.com/s/jz15fo7e9km8n00/Automation 2020-10-22.ris?dl=0

Thanks in advance for any help.