For what it's worth, one of my TAs now informs me he got the same error on macOS 11.0 Beta.
He says he just has the standard macOS firewall. He whitelisted DrRacket and it persists. I asked him to try installing Racket 7.7 and installing the package through that; same issue. He was only able to get it working from the command-line. Shriram -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-users/CAJUf2ySTYDNAFgLn2e%2BRUZtKjo0_2BUp1ZMccsGrOo%3DkGi2acw%40mail.gmail.com.
