Error in DrRacket "Couldn't find a browser"

[Chae Cramb]

I'm new to Racket and have just started working through the "How to Code" course on edX. When I right-click on a primitive in DrRacket and try to search for it in the Help Desk I get the following error:

send-url: Couldn't find a browser to open URL: "file:///C:/Users/chaec/AppData/Local/Temp/plt-sendurl-contents-file-16208383081620838308452.html"
  context...:
   C:\Program Files\Racket\share\pkgs\net-lib\net\sendurl.rkt:98:0: send-url
   [repeats 1 more time]
   C:\Program Files\Racket\share\pkgs\gui-lib\mred\private\mrmenu.rkt:250:14: command method in basic-selectable-menu-item%
   C:\Program Files\Racket\share\pkgs\gui-lib\mred\private\mrpopup.rkt:49:38: go
   C:\Program Files\Racket\share\pkgs\gui-lib\mred\private\wx\common\queue.rkt:435:6
   C:\Program Files\Racket\share\pkgs\gui-lib\mred\private\wx\common\queue.rkt:486:32

   C:\Program Files\Racket\share\pkgs\gui-lib\mred\private\wx\common\queue.rkt:634:3

I'm on Windows 10 Home 21H1.

Can anyone offer any advice?