I just upgraded to Catalina too, all my website files have vanished, I have back ups from 2004. This update just destroyed me, they're all gone, I cannot believe this has happened. I've been at it all month trying to download all 84 websites is insane, so far it's been a week of just downloading, looks like it's going to take another 3 moths before I can get back to where I was 2 months ago. Obviously there's no fix yet, today is Oct. 10, 2020 <Shakes and drops head> bye bye mac. I have to go back to the pc, this has become a complete nightmare!