Could you please post the contents of the errorLog.txt as we are not permitted to open files.
There are 2 ways to configure CAD.
Reader - Does not need CAD program installed. (Can only read in parts)
Associative/Plugin - CAD Program will need to be installed. (Changes can be made to part and seen by program)
See the following link for CAD Platform Support:
https://www.ansys.com/content/dam/it-solutions/platform-support/cad-support-2021-r2.pdf
Best Regards
Geo