MDS not working on Catalina

Hey guys,
This is our second year using MDS and had no problems last year or at the beginning of this summer upgrading up students’ MacBook Airs. We are not sure what could be causing these issues and any help would be greatly appreciated. Here are the errors we are seeing:

  • the imagr gets stuck preparing the MacOS installer
  • we get an error saying that the HD is formatted for APFS and the MDS is trying to install an HFS image
  • Error code: libc++abi.dylib: terminating with uncaught exception of type NSException

Any ideas?

Which version of macOS are you trying to install, and how? Via the Recovery environment? If yes, which version of Recovery are you using?