This forum is deprecated.
I'm having problems with getit (delphi 10.4), it returns the error: cannot load data from the server: "RadStudio.json" metadata file does not exist.
Sounds like you did the ISO installer like I did. I used the other suggestions mentioned to run the command line to enable Getit to run in online mode, then you could install the patches and Getit Packages. I had to actually uninstall OSX and Linux platforms, then install them again using Getit in Online mode as the offline modes failed to properly install the platforms.
you should run the command "GetItCmd.exe -c=useonline"
it is in C:\Program Files (x86)\Embarcadero\Studio\21.0\bin (if you use the default directory )
to switch from offline mode (installing using ISO ) to online mode