FBX conversion to glTF failed with error: 127
In Godot 4.3, FBX2glTF was replaced with ubx and is no longer maintained. 1
However, the FBX2glTF import option is still available in Godot and any existing FBX assets might still be configured to use the FBX2glTF importer. This can result in the following error if FBX2glTF is not installed: 2
ERROR: modules/fbx/editor/editor_scene_importer_fbx2gltf.cpp:92 - FBX conversion to glTF failed with error: 127.
To fix this issue in Godot 4.3 onwards, change the import setting fbx/importer to ufbx. Or, you can install FBX2glTF again but this isn’t recommended since it’s no longer maintained. 2