Unreal Engine 4.20.1 Smoothing Groups on Character (FBX) Import

So, yesyerday everything was working fine.
Then i just restarded Unreal engine, imported the same character in another Project and this errors came up.
“No smoothing group information was found in this FBX scene. Please make sure to enable the ‘Export Smoothing Groups’ option in the FBX Exporter plug-in before exporting the file. Even for tools that don’t support smoothing groups, the FBX Exporter will generate appropriate smoothing data at export-time so that correct vertex normals can be inferred while importing”
This happen when i try to import Mixamo character, or any 3d models. Before everything was working fine, any solutions?