Hi all,
one student of mine asked me for a help with installation TeXlive
(from
http://www.tug.org/mactex/mactex-download.html)
on her MacBook Air 16 with macOS Catalina.
Despite the fact that the site states
"All install packages are developer-signed and notarized by Apple.",
she got:
"Cannot be opened because its from unidentified developer, MacOS cannot verify that this app is free from malware."
What could it be?
I have got no experience with MacOS, so I would like to ask for some hints how we can fix it.