Sure, to help diagnose the issue, please provide a few more details:
1. Which Godot version and OS are you using?
2. Are you using the Godot importer (AATTAAI) from GitHub? https://github.com/boneboxid/AATTAAI/releases/tag/v1.6.5
3. What is the asset that you trying to import? is it free or paid ?
4. Could you share a screenshot of the issue and the exact error log from Godot’s Output / Debugger tab?