After the 2021-007 security update on my Macbook Pro 2012 (16 GB 1TB SSD) which is running Catalina 10.15.7, multiple applications refused to start. RStudio, Google Earth Pro, and Stellarium were what I found before giving up and rolling back the update from my Time Machine backup (which fixed everything). The internet is just picking up on this and the application Plex is also affected. No doubt many others as well. I noticed Qt in all the tracebacks and wonder if this may be the common factor.
I hope a solution is forthcoming soon, because I'm unable to update this machine above Catalina.
I hope a solution is forthcoming soon, because I'm unable to update this machine above Catalina.